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Finding the Third Proportional to 394,906.50 and 627,680.25

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Solution

The third proportional to 394,906.50 and 627,680.25 is: 997,660.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,906.50 : 627,680.25 = 627,680.25 : x
  2. Step 2: Convert to fraction form
    394,906.50/627,680.25 = 627,680.25/x
  3. Step 3: Cross multiply
    394,906.50x = 627,680.25 × 627,680.25
  4. Step 4: Simplify right side
    394,906.50x = 393,982,496,240.06
  5. Step 5: Solve for x
    x = 393,982,496,240.06/394,906.50
  6. Step 6: Final answer
    x = 997,660.20

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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.