Step 1:
The first step to converting 409988.6405098 to a fraction is to re-write 409988.6405098 in the form p/q where p and q are both positive integers. To start with, 409988.6405098 can be written as simply 409988.6405098/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 409988.6405098, which in this case is 7. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 409988.6405098/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 409988.6405098/1 each by 10000000:
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 409988.6405098 as a fraction:
409989/1 / 1