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Finding the Third Proportional to 318,101.63 and 691,425

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Solution

The third proportional to 318,101.63 and 691,425 is: 1,502,879.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,101.63 : 691,425 = 691,425 : x
  2. Step 2: Convert to fraction form
    318,101.63/691,425 = 691,425/x
  3. Step 3: Cross multiply
    318,101.63x = 691,425 × 691,425
  4. Step 4: Simplify right side
    318,101.63x = 478,068,530,625
  5. Step 5: Solve for x
    x = 478,068,530,625/318,101.63
  6. Step 6: Final answer
    x = 1,502,879.88

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.