How do you use this calculator to calculate future population?

Example:

6000000000 at a growth of 1.01 over the next 24 years

Re: calculate future population

The formula for population growth is:

population * (annual growth rate ^ number of years)

In your example,

6000000000 * (1.01^24) = 7618407891

To get your calculator to perfom the calculation, enter it in the following steps:

Type 6000000000

Press the multiply key

Press the ( key

Type 1.01

Press the yx key (located right above the divide key)

Type 24

Press the ) key

Press the = key

You can reuse this formula, substituting any values you wish for the current population, growth rate, and number of years.

Regards,

Javabytes

Posted on Nov 12, 2007

Re: calculate future population

Solve the equation of regression line for two varaible and three varialbles

Posted on Apr 19, 2011

Re: calculate future population

To calculate the future population the correct formula is Current Population x Total Fertility Rate / 2 x Future Life Expectancy / Current Life Expectancy or CP*TFR/2*FLE/CLE

Look up The World Bank and CIA Factbook for further info.

DMANSR

Posted on Jul 29, 2009

Re: calculate future population

I don't think this is either A) the correcto formula or B) the correct way to solve it. So i really think this should be in the unsolved problem catergory. in 24 years the earth's population on its current trend of 1.01 would have it way higher than 7.6 billion.

Posted on Jan 23, 2008

Hi there, if you are following the example from page 24 of the manual - The steps are as follows - reset or clear the previous values by pressing the orange key (2nd F) and MODE.

Then make sure that BGN is not displayed (To do this press 2nd F and FV (above it you will see BGN/END)). To set the number of payments per year press 2nd F I/Y (above it is P/Y). Type in 12 and press ENT. Press the down arrow key and to make sure C/Y also says 12 (12 compounding periods per year). Then press on. Calculate the total number of payments - to do this type in 20 2nd F N (to get xP/Y) and then store the answer in N by pressing N again. (Your screen should say ANS -> 240.00)Type in your present value 56000 and press PV to store it. Enter the monthly payment press +/- 440 PMT. Enter your future value (press 0 then FV). Now to calculate the interest rate press COMP I/Y. It should give you 7.17 %

A very common error is not pressing N to store the number of total payments into the calculator.

If this is not the example you meant, please let me know - and I will explain the other example.

good luck

Then make sure that BGN is not displayed (To do this press 2nd F and FV (above it you will see BGN/END)). To set the number of payments per year press 2nd F I/Y (above it is P/Y). Type in 12 and press ENT. Press the down arrow key and to make sure C/Y also says 12 (12 compounding periods per year). Then press on. Calculate the total number of payments - to do this type in 20 2nd F N (to get xP/Y) and then store the answer in N by pressing N again. (Your screen should say ANS -> 240.00)Type in your present value 56000 and press PV to store it. Enter the monthly payment press +/- 440 PMT. Enter your future value (press 0 then FV). Now to calculate the interest rate press COMP I/Y. It should give you 7.17 %

A very common error is not pressing N to store the number of total payments into the calculator.

If this is not the example you meant, please let me know - and I will explain the other example.

good luck

Jun 23, 2014 | Sharp EL-738 Scientific Calculator

hi

to explain what a logarithm is, it's to involved to explain here but check sosmath.com for a detailed explaination of it

i use it to find root and powers of numbers. it turn up in certain natural process like radioactive decay, population growth, interest calculations..etc

for square rooting a number

square root of 16

type 16 press the log ( I'm using a scientific calculator a TI 30s to be exact) key to get 1.204119983 for a result divide by 2 to get .602059991 press shift or 2nd log key ( to get the 10^ key - this the anti- log key) to get 4 as a result

I hope this helps

to explain what a logarithm is, it's to involved to explain here but check sosmath.com for a detailed explaination of it

i use it to find root and powers of numbers. it turn up in certain natural process like radioactive decay, population growth, interest calculations..etc

for square rooting a number

square root of 16

type 16 press the log ( I'm using a scientific calculator a TI 30s to be exact) key to get 1.204119983 for a result divide by 2 to get .602059991 press shift or 2nd log key ( to get the 10^ key - this the anti- log key) to get 4 as a result

I hope this helps

May 25, 2014 | Texas Instruments TI 30XIIS Scientific...

And the question is?

To calculate the population at a future date , calculate the number**t=future year -2005** and substitute this value for t in your expression

a (future year)=22.9*e^(0.0183*t)

To calculate the population at a future date , calculate the number

a (future year)=22.9*e^(0.0183*t)

Oct 23, 2013 | Calculators

You must first understand the problem on your own before you can do it on the calculator.

Calculate the difference in populations 240 000 -206 000

Calculate the time difference 2010-2000.

Divide the difference between populations by the difference in years.

Multiply the result by 100 % if you want a percentage value.

Calculate the difference in populations 240 000 -206 000

Calculate the time difference 2010-2000.

Divide the difference between populations by the difference in years.

Multiply the result by 100 % if you want a percentage value.

Feb 07, 2013 | HP 10bII Calculator

The population doubles in ten years so the annual growth is the tenth root of two. The growth in twelve years is the annual growth rate raised to the twelfth power.

The tenth root of two is about 1.0718 . That value raised to the twelfth power is about 2.2974 . Multiplied by the initial population of 2800 gives 6433.

On the TI-30XA press 2 2nd [xth-root] 1 0 = y^x 1 2 * 2 8 0 0 =

The tenth root of two is about 1.0718 . That value raised to the twelfth power is about 2.2974 . Multiplied by the initial population of 2800 gives 6433.

On the TI-30XA press 2 2nd [xth-root] 1 0 = y^x 1 2 * 2 8 0 0 =

Nov 05, 2012 | Texas Instruments TI-30XA Calculator

Usually, population changes are not linear, but since you give only two points (2000, 206 000) and (2010, 240 000) that is all you can calculate. The average growth rate is given by the rise over run.

Growth Rate=(240 000-206 000)/(2010-2000)=34 000/10

Growth Rate=(240 000-206 000)/(2010-2000)=34 000/10

Jun 25, 2012 | Casio FX570MS Scientific Calculator

What you've done is calculate the future value after 3 months, not 3 years.

Press 1 SHIFT [P/YR] to set the payments per year to one. Now the FV key should give you 115.76

Press 1 SHIFT [P/YR] to set the payments per year to one. Now the FV key should give you 115.76

Feb 15, 2011 | HP 10bII Calculator

That depends on the interest rate.

2nd [CLR TVM] (clear previous data)

5 0 0 0 PMT (monthly payment)

2 0 2nd [*P/Y] N (20 years of monthly payments)

annual interest rate I/Y (annual interest rate)

CPT PV (compute present value)

At 10% it's about $518,000

2nd [CLR TVM] (clear previous data)

5 0 0 0 PMT (monthly payment)

2 0 2nd [*P/Y] N (20 years of monthly payments)

annual interest rate I/Y (annual interest rate)

CPT PV (compute present value)

At 10% it's about $518,000

May 26, 2010 | Texas Instruments BA-II Plus Calculator

your best bet in any kind of exponential equation is to set up the general form of the equation and then solve for the constants with the numbers they gave you. With P being population, t being time, you know it is going to look like P=Ae^(b*t) and you are given 2 P's for 2 t's.

So for the first set :

Eq 1 P(26)=40,000=Ae^(b*26)

and the second being a time t=0 P was half the current value:

Eq 2 P(0)=20,000=Ae^(b*0)

20,000=A*1 so A=20,000

now b from Eq 1

40,000=20,000e^(b*26)

So for the first set :

Eq 1 P(26)=40,000=Ae^(b*26)

and the second being a time t=0 P was half the current value:

Eq 2 P(0)=20,000=Ae^(b*0)

20,000=A*1 so A=20,000

now b from Eq 1

40,000=20,000e^(b*26)

Aug 04, 2009 | Texas Instruments TI-30XA Calculator

5,105 people viewed this question

Usually answered in minutes!

I need a step by step example or directions

×