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Finding the Third Proportional to 391,172 and 587,622

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Solution

The third proportional to 391,172 and 587,622 is: 882,730.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,172 : 587,622 = 587,622 : x
  2. Step 2: Convert to fraction form
    391,172/587,622 = 587,622/x
  3. Step 3: Cross multiply
    391,172x = 587,622 × 587,622
  4. Step 4: Simplify right side
    391,172x = 345,299,614,884
  5. Step 5: Solve for x
    x = 345,299,614,884/391,172
  6. Step 6: Final answer
    x = 882,730.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.