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Finding the Third Proportional to 672,830 and 1,121,325

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Solution

The third proportional to 672,830 and 1,121,325 is: 1,868,777.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,830 : 1,121,325 = 1,121,325 : x
  2. Step 2: Convert to fraction form
    672,830/1,121,325 = 1,121,325/x
  3. Step 3: Cross multiply
    672,830x = 1,121,325 × 1,121,325
  4. Step 4: Simplify right side
    672,830x = 1,257,369,755,625
  5. Step 5: Solve for x
    x = 1,257,369,755,625/672,830
  6. Step 6: Final answer
    x = 1,868,777.78

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Why These Related Problems?

These problems maintain the same ratio (1.67) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.