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Finding the Third Proportional to 427,743 and 662,242

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Solution

The third proportional to 427,743 and 662,242 is: 1,025,298.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,743 : 662,242 = 662,242 : x
  2. Step 2: Convert to fraction form
    427,743/662,242 = 662,242/x
  3. Step 3: Cross multiply
    427,743x = 662,242 × 662,242
  4. Step 4: Simplify right side
    427,743x = 438,564,466,564
  5. Step 5: Solve for x
    x = 438,564,466,564/427,743
  6. Step 6: Final answer
    x = 1,025,298.99

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.