Step 1:
The first step to converting 598178.399491 to a fraction is to re-write 598178.399491 in the form p/q where p and q are both positive integers. To start with, 598178.399491 can be written as simply 598178.399491/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 598178.399491, which in this case is 6. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 598178.399491/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 598178.399491/1 each by 1000000:
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 598178.399491 as a fraction:
598178/1 / 1