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Finding the Third Proportional to 313,651 and 667,762

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Solution

The third proportional to 313,651 and 667,762 is: 1,421,663.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,651 : 667,762 = 667,762 : x
  2. Step 2: Convert to fraction form
    313,651/667,762 = 667,762/x
  3. Step 3: Cross multiply
    313,651x = 667,762 × 667,762
  4. Step 4: Simplify right side
    313,651x = 445,906,088,644
  5. Step 5: Solve for x
    x = 445,906,088,644/313,651
  6. Step 6: Final answer
    x = 1,421,663.21

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.