Step 1:
The first step to converting 451598.77605039 to a fraction is to re-write 451598.77605039 in the form p/q where p and q are both positive integers. To start with, 451598.77605039 can be written as simply 451598.77605039/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 451598.77605039, which in this case is 8. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 451598.77605039/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 451598.77605039/1 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 451598.77605039 as a fraction:
451599/1 / 1