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Finding the Third Proportional to 316,632 and 672,126

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Solution

The third proportional to 316,632 and 672,126 is: 1,426,745.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,632 : 672,126 = 672,126 : x
  2. Step 2: Convert to fraction form
    316,632/672,126 = 672,126/x
  3. Step 3: Cross multiply
    316,632x = 672,126 × 672,126
  4. Step 4: Simplify right side
    316,632x = 451,753,359,876
  5. Step 5: Solve for x
    x = 451,753,359,876/316,632
  6. Step 6: Final answer
    x = 1,426,745.75

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.