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Finding the Fourth Proportional to 538,124.80, 807,187.20 and 403,405.60

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Solution

The fourth proportional to 538,124.80, 807,187.20 and 403,405.60 is: 605,108.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,124.80 : 807,187.20 = 403,405.60 : x
  2. Step 2: Convert to fraction form
    538,124.80/807,187.20 = 403,405.60/x
  3. Step 3: Cross multiply
    538,124.80x = 807,187.20 × 403,405.60
  4. Step 4: Simplify right side
    538,124.80x = 325,623,836,728.32
  5. Step 5: Solve for x
    x = 325,623,836,728.32/538,124.80
  6. Step 6: Final answer
    x = 605,108.40

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