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Finding the Third Proportional to 9,687,603 and 20,378,958

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Solution

The third proportional to 9,687,603 and 20,378,958 is: 42,869,420.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,687,603 : 20,378,958 = 20,378,958 : x
  2. Step 2: Convert to fraction form
    9,687,603/20,378,958 = 20,378,958/x
  3. Step 3: Cross multiply
    9,687,603x = 20,378,958 × 20,378,958
  4. Step 4: Simplify right side
    9,687,603x = 415,301,929,165,764
  5. Step 5: Solve for x
    x = 415,301,929,165,764/9,687,603
  6. Step 6: Final answer
    x = 42,869,420.76

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.