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Finding the Third Proportional to 368,497 and 781,280

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Solution

The third proportional to 368,497 and 781,280 is: 1,656,454.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,497 : 781,280 = 781,280 : x
  2. Step 2: Convert to fraction form
    368,497/781,280 = 781,280/x
  3. Step 3: Cross multiply
    368,497x = 781,280 × 781,280
  4. Step 4: Simplify right side
    368,497x = 610,398,438,400
  5. Step 5: Solve for x
    x = 610,398,438,400/368,497
  6. Step 6: Final answer
    x = 1,656,454.30

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.