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Finding the Fourth Proportional to 721,082.31, 995,053.12 and 394,330.31

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Solution

The fourth proportional to 721,082.31, 995,053.12 and 394,330.31 is: 544,153.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,082.31 : 995,053.12 = 394,330.31 : x
  2. Step 2: Convert to fraction form
    721,082.31/995,053.12 = 394,330.31/x
  3. Step 3: Cross multiply
    721,082.31x = 995,053.12 × 394,330.31
  4. Step 4: Simplify right side
    721,082.31x = 392,379,605,276.07
  5. Step 5: Solve for x
    x = 392,379,605,276.07/721,082.31
  6. Step 6: Final answer
    x = 544,153.70

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