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Finding the Third Proportional to 285,589 and 627,220

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Solution

The third proportional to 285,589 and 627,220 is: 1,377,521.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,589 : 627,220 = 627,220 : x
  2. Step 2: Convert to fraction form
    285,589/627,220 = 627,220/x
  3. Step 3: Cross multiply
    285,589x = 627,220 × 627,220
  4. Step 4: Simplify right side
    285,589x = 393,404,928,400
  5. Step 5: Solve for x
    x = 393,404,928,400/285,589
  6. Step 6: Final answer
    x = 1,377,521.29

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.