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Finding the Third Proportional to 275,416 and 418,632

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Solution

The third proportional to 275,416 and 418,632 is: 636,320.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,416 : 418,632 = 418,632 : x
  2. Step 2: Convert to fraction form
    275,416/418,632 = 418,632/x
  3. Step 3: Cross multiply
    275,416x = 418,632 × 418,632
  4. Step 4: Simplify right side
    275,416x = 175,252,751,424
  5. Step 5: Solve for x
    x = 175,252,751,424/275,416
  6. Step 6: Final answer
    x = 636,320.15

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.