Let's figure out how the formula for this would work:
We'll invest $1.00 at 100% interest for one year and we'll keep increasing the compounding and see what happens.
A quick example, so you can follow this:
$1.00 compounded quarterly at
100% interest for
1
year...
initial amount = $1
split factor = 1.25
number of splits = 4
TRY IT:
Do the same for compounded monthly.
Let's make a table:
TIMES COMPOUNDED | AMOUNT | ||
annually | $2 | ||
semi-annually | $2.25 | ||
quarterly |
![]() |
$2.4414062... | |
monthly |
![]() |
$2.6130352... | |
100 times |
![]() |
$2.7048138... | |
1000 times |
![]() |
$2.7169239... | |
10,000 |
![]() |
$2.7181459... | |
100,000 |
![]() |
$2.718268... | |
1,000,000 |
![]() |
$2.7182804... |
Look at what's happening here.
Not changing very much anymore, are they?
In fact, they are getting closer and closer to a very special number
It's an
irrational number like
. It goes on forever and ever and
never repeats.
We won't be able to use the split factor for continuous compounding, BUT we WILL be able to use this e guy... and he came from the split factor!
Continued on the next page