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Finding the Third Proportional to 1,987,311 and 4,310,691

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Solution

The third proportional to 1,987,311 and 4,310,691 is: 9,350,351.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987,311 : 4,310,691 = 4,310,691 : x
  2. Step 2: Convert to fraction form
    1,987,311/4,310,691 = 4,310,691/x
  3. Step 3: Cross multiply
    1,987,311x = 4,310,691 × 4,310,691
  4. Step 4: Simplify right side
    1,987,311x = 18,582,056,897,481
  5. Step 5: Solve for x
    x = 18,582,056,897,481/1,987,311
  6. Step 6: Final answer
    x = 9,350,351.76

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.