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Finding the Fourth Proportional to 625,909.87, 863,748.02 and 339,426.64

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Solution

The fourth proportional to 625,909.87, 863,748.02 and 339,426.64 is: 468,404.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,909.87 : 863,748.02 = 339,426.64 : x
  2. Step 2: Convert to fraction form
    625,909.87/863,748.02 = 339,426.64/x
  3. Step 3: Cross multiply
    625,909.87x = 863,748.02 × 339,426.64
  4. Step 4: Simplify right side
    625,909.87x = 293,179,082,219.38
  5. Step 5: Solve for x
    x = 293,179,082,219.38/625,909.87
  6. Step 6: Final answer
    x = 468,404.64

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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.