Step 1:
The first step to converting 409939.24792657 to a fraction is to re-write 409939.24792657 in the form p/q where p and q are both positive integers. To start with, 409939.24792657 can be written as simply 409939.24792657/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 409939.24792657, which in this case is 8. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 409939.24792657/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 409939.24792657/1 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 409939.24792657 as a fraction:
409939/1 / 1