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Finding the Third Proportional to 442,800 and 687,528

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Solution

The third proportional to 442,800 and 687,528 is: 1,067,512.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,800 : 687,528 = 687,528 : x
  2. Step 2: Convert to fraction form
    442,800/687,528 = 687,528/x
  3. Step 3: Cross multiply
    442,800x = 687,528 × 687,528
  4. Step 4: Simplify right side
    442,800x = 472,694,750,784
  5. Step 5: Solve for x
    x = 472,694,750,784/442,800
  6. Step 6: Final answer
    x = 1,067,512.99

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.