Step 1:
The first step to converting 407728.21611808 to a fraction is to re-write 407728.21611808 in the form p/q where p and q are both positive integers. To start with, 407728.21611808 can be written as simply 407728.21611808/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 407728.21611808, which in this case is 8. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 407728.21611808/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 407728.21611808/1 each by 100000000:
Step 3:
Now the last step is to simplify the fraction (if possible) by finding similar factors and cancelling them out, which leads to the following answer for 407728.21611808 as a fraction:
407728/1 / 1