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Finding the Third Proportional to 392,812.50 and 627,612.75

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Solution

The third proportional to 392,812.50 and 627,612.75 is: 1,002,762.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,812.50 : 627,612.75 = 627,612.75 : x
  2. Step 2: Convert to fraction form
    392,812.50/627,612.75 = 627,612.75/x
  3. Step 3: Cross multiply
    392,812.50x = 627,612.75 × 627,612.75
  4. Step 4: Simplify right side
    392,812.50x = 393,897,763,962.56
  5. Step 5: Solve for x
    x = 393,897,763,962.56/392,812.50
  6. Step 6: Final answer
    x = 1,002,762.80

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.