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Finding the Third Proportional to 472,675.50 and 636,781.50

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Solution

The third proportional to 472,675.50 and 636,781.50 is: 857,862.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,675.50 : 636,781.50 = 636,781.50 : x
  2. Step 2: Convert to fraction form
    472,675.50/636,781.50 = 636,781.50/x
  3. Step 3: Cross multiply
    472,675.50x = 636,781.50 × 636,781.50
  4. Step 4: Simplify right side
    472,675.50x = 405,490,678,742.25
  5. Step 5: Solve for x
    x = 405,490,678,742.25/472,675.50
  6. Step 6: Final answer
    x = 857,862.70

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.