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Finding the Third Proportional to 391,843 and 586,246

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Solution

The third proportional to 391,843 and 586,246 is: 877,097.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,843 : 586,246 = 586,246 : x
  2. Step 2: Convert to fraction form
    391,843/586,246 = 586,246/x
  3. Step 3: Cross multiply
    391,843x = 586,246 × 586,246
  4. Step 4: Simplify right side
    391,843x = 343,684,372,516
  5. Step 5: Solve for x
    x = 343,684,372,516/391,843
  6. Step 6: Final answer
    x = 877,097.13

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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.