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Finding the Third Proportional to 438,419 and 660,525

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Solution

The third proportional to 438,419 and 660,525 is: 995,151.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,419 : 660,525 = 660,525 : x
  2. Step 2: Convert to fraction form
    438,419/660,525 = 660,525/x
  3. Step 3: Cross multiply
    438,419x = 660,525 × 660,525
  4. Step 4: Simplify right side
    438,419x = 436,293,275,625
  5. Step 5: Solve for x
    x = 436,293,275,625/438,419
  6. Step 6: Final answer
    x = 995,151.39

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.