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Finding the Third Proportional to 348,446 and 490,698

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Solution

The third proportional to 348,446 and 490,698 is: 691,023.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,446 : 490,698 = 490,698 : x
  2. Step 2: Convert to fraction form
    348,446/490,698 = 490,698/x
  3. Step 3: Cross multiply
    348,446x = 490,698 × 490,698
  4. Step 4: Simplify right side
    348,446x = 240,784,527,204
  5. Step 5: Solve for x
    x = 240,784,527,204/348,446
  6. Step 6: Final answer
    x = 691,023.94

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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.