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Finding the Fourth Proportional to 616,447.72, 924,511.20 and 261,278.92

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Solution

The fourth proportional to 616,447.72, 924,511.20 and 261,278.92 is: 391,850.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,447.72 : 924,511.20 = 261,278.92 : x
  2. Step 2: Convert to fraction form
    616,447.72/924,511.20 = 261,278.92/x
  3. Step 3: Cross multiply
    616,447.72x = 924,511.20 × 261,278.92
  4. Step 4: Simplify right side
    616,447.72x = 241,555,287,863.90
  5. Step 5: Solve for x
    x = 241,555,287,863.90/616,447.72
  6. Step 6: Final answer
    x = 391,850.40

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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.