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Finding the Fourth Proportional to 625,892.62, 863,732.28 and 339,412.64

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Solution

The fourth proportional to 625,892.62, 863,732.28 and 339,412.64 is: 468,389.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,892.62 : 863,732.28 = 339,412.64 : x
  2. Step 2: Convert to fraction form
    625,892.62/863,732.28 = 339,412.64/x
  3. Step 3: Cross multiply
    625,892.62x = 863,732.28 × 339,412.64
  4. Step 4: Simplify right side
    625,892.62x = 293,161,653,408.02
  5. Step 5: Solve for x
    x = 293,161,653,408.02/625,892.62
  6. Step 6: Final answer
    x = 468,389.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.