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Finding the Fourth Proportional to 499,408.20, 748,456.20 and 442,983.60

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Solution

The fourth proportional to 499,408.20, 748,456.20 and 442,983.60 is: 663,893.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,408.20 : 748,456.20 = 442,983.60 : x
  2. Step 2: Convert to fraction form
    499,408.20/748,456.20 = 442,983.60/x
  3. Step 3: Cross multiply
    499,408.20x = 748,456.20 × 442,983.60
  4. Step 4: Simplify right side
    499,408.20x = 331,553,821,918.32
  5. Step 5: Solve for x
    x = 331,553,821,918.32/499,408.20
  6. Step 6: Final answer
    x = 663,893.43

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