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Finding the Fourth Proportional to 521,867.30, 782,800.95 and 272,516.90

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Solution

The fourth proportional to 521,867.30, 782,800.95 and 272,516.90 is: 408,775.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,867.30 : 782,800.95 = 272,516.90 : x
  2. Step 2: Convert to fraction form
    521,867.30/782,800.95 = 272,516.90/x
  3. Step 3: Cross multiply
    521,867.30x = 782,800.95 × 272,516.90
  4. Step 4: Simplify right side
    521,867.30x = 213,326,488,211.06
  5. Step 5: Solve for x
    x = 213,326,488,211.06/521,867.30
  6. Step 6: Final answer
    x = 408,775.35

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Similar ratio
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1.5x scale

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.