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Finding the Third Proportional to 8,639,489 and 18,561,087

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Solution

The third proportional to 8,639,489 and 18,561,087 is: 39,876,658.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,639,489 : 18,561,087 = 18,561,087 : x
  2. Step 2: Convert to fraction form
    8,639,489/18,561,087 = 18,561,087/x
  3. Step 3: Cross multiply
    8,639,489x = 18,561,087 × 18,561,087
  4. Step 4: Simplify right side
    8,639,489x = 344,513,950,621,569
  5. Step 5: Solve for x
    x = 344,513,950,621,569/8,639,489
  6. Step 6: Final answer
    x = 39,876,658.29

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.