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Finding the Third Proportional to 298,428 and 462,770

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Solution

The third proportional to 298,428 and 462,770 is: 717,613.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,428 : 462,770 = 462,770 : x
  2. Step 2: Convert to fraction form
    298,428/462,770 = 462,770/x
  3. Step 3: Cross multiply
    298,428x = 462,770 × 462,770
  4. Step 4: Simplify right side
    298,428x = 214,156,072,900
  5. Step 5: Solve for x
    x = 214,156,072,900/298,428
  6. Step 6: Final answer
    x = 717,613.87

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.