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Finding the Third Proportional to 269,856 and 428,904

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Solution

The third proportional to 269,856 and 428,904 is: 681,691.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,856 : 428,904 = 428,904 : x
  2. Step 2: Convert to fraction form
    269,856/428,904 = 428,904/x
  3. Step 3: Cross multiply
    269,856x = 428,904 × 428,904
  4. Step 4: Simplify right side
    269,856x = 183,958,641,216
  5. Step 5: Solve for x
    x = 183,958,641,216/269,856
  6. Step 6: Final answer
    x = 681,691.87

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.