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Finding the Third Proportional to 7,139,691 and 15,696,555

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Solution

The third proportional to 7,139,691 and 15,696,555 is: 34,508,753.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,139,691 : 15,696,555 = 15,696,555 : x
  2. Step 2: Convert to fraction form
    7,139,691/15,696,555 = 15,696,555/x
  3. Step 3: Cross multiply
    7,139,691x = 15,696,555 × 15,696,555
  4. Step 4: Simplify right side
    7,139,691x = 246,381,838,868,025
  5. Step 5: Solve for x
    x = 246,381,838,868,025/7,139,691
  6. Step 6: Final answer
    x = 34,508,753.79

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.