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Finding the Fourth Proportional to 911,442.97, 1,257,898.17 and 549,049.78

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Solution

The fourth proportional to 911,442.97, 1,257,898.17 and 549,049.78 is: 757,753.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,442.97 : 1,257,898.17 = 549,049.78 : x
  2. Step 2: Convert to fraction form
    911,442.97/1,257,898.17 = 549,049.78/x
  3. Step 3: Cross multiply
    911,442.97x = 1,257,898.17 × 549,049.78
  4. Step 4: Simplify right side
    911,442.97x = 690,648,713,500.90
  5. Step 5: Solve for x
    x = 690,648,713,500.90/911,442.97
  6. Step 6: Final answer
    x = 757,753.08

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1.5x scale

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.