Step 1:
The first step to converting 554400.5549991 to a fraction is to re-write 554400.5549991 in the form p/q where p and q are both positive integers. To start with, 554400.5549991 can be written as simply 554400.5549991/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 554400.5549991, which in this case is 7. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 554400.5549991/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 554400.5549991/1 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 554400.5549991 as a fraction:
554401/1 / 1