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Finding the Third Proportional to 412,990 and 581,589

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Solution

The third proportional to 412,990 and 581,589 is: 819,016.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,990 : 581,589 = 581,589 : x
  2. Step 2: Convert to fraction form
    412,990/581,589 = 581,589/x
  3. Step 3: Cross multiply
    412,990x = 581,589 × 581,589
  4. Step 4: Simplify right side
    412,990x = 338,245,764,921
  5. Step 5: Solve for x
    x = 338,245,764,921/412,990
  6. Step 6: Final answer
    x = 819,016.84

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.