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Finding the Third Proportional to 318,552 and 667,776

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Solution

The third proportional to 318,552 and 667,776 is: 1,399,849.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,552 : 667,776 = 667,776 : x
  2. Step 2: Convert to fraction form
    318,552/667,776 = 667,776/x
  3. Step 3: Cross multiply
    318,552x = 667,776 × 667,776
  4. Step 4: Simplify right side
    318,552x = 445,924,786,176
  5. Step 5: Solve for x
    x = 445,924,786,176/318,552
  6. Step 6: Final answer
    x = 1,399,849.27

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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.