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Finding the Fourth Proportional to 678,773.28, 936,652.50 and 392,311.92

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Solution

The fourth proportional to 678,773.28, 936,652.50 and 392,311.92 is: 541,358.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,773.28 : 936,652.50 = 392,311.92 : x
  2. Step 2: Convert to fraction form
    678,773.28/936,652.50 = 392,311.92/x
  3. Step 3: Cross multiply
    678,773.28x = 936,652.50 × 392,311.92
  4. Step 4: Simplify right side
    678,773.28x = 367,459,940,647.80
  5. Step 5: Solve for x
    x = 367,459,940,647.80/678,773.28
  6. Step 6: Final answer
    x = 541,358.88

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