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Finding the Fourth Proportional to 658,372.39, 987,410.62 and 392,208.55

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Solution

The fourth proportional to 658,372.39, 987,410.62 and 392,208.55 is: 588,224.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,372.39 : 987,410.62 = 392,208.55 : x
  2. Step 2: Convert to fraction form
    658,372.39/987,410.62 = 392,208.55/x
  3. Step 3: Cross multiply
    658,372.39x = 987,410.62 × 392,208.55
  4. Step 4: Simplify right side
    658,372.39x = 387,270,885,546.54
  5. Step 5: Solve for x
    x = 387,270,885,546.54/658,372.39
  6. Step 6: Final answer
    x = 588,224.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.