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Finding the Third Proportional to 639,864 and 1,399,893

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Solution

The third proportional to 639,864 and 1,399,893 is: 3,062,682.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,864 : 1,399,893 = 1,399,893 : x
  2. Step 2: Convert to fraction form
    639,864/1,399,893 = 1,399,893/x
  3. Step 3: Cross multiply
    639,864x = 1,399,893 × 1,399,893
  4. Step 4: Simplify right side
    639,864x = 1,959,700,411,449
  5. Step 5: Solve for x
    x = 1,959,700,411,449/639,864
  6. Step 6: Final answer
    x = 3,062,682.71

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.