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Finding the Third Proportional to 292,430 and 628,374

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Solution

The third proportional to 292,430 and 628,374 is: 1,350,250.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,430 : 628,374 = 628,374 : x
  2. Step 2: Convert to fraction form
    292,430/628,374 = 628,374/x
  3. Step 3: Cross multiply
    292,430x = 628,374 × 628,374
  4. Step 4: Simplify right side
    292,430x = 394,853,883,876
  5. Step 5: Solve for x
    x = 394,853,883,876/292,430
  6. Step 6: Final answer
    x = 1,350,250.95

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.