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Finding the Third Proportional to 417,642.75 and 636,257.25

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Solution

The third proportional to 417,642.75 and 636,257.25 is: 969,305.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,642.75 : 636,257.25 = 636,257.25 : x
  2. Step 2: Convert to fraction form
    417,642.75/636,257.25 = 636,257.25/x
  3. Step 3: Cross multiply
    417,642.75x = 636,257.25 × 636,257.25
  4. Step 4: Simplify right side
    417,642.75x = 404,823,288,177.56
  5. Step 5: Solve for x
    x = 404,823,288,177.56/417,642.75
  6. Step 6: Final answer
    x = 969,305.20

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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.