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Finding the Third Proportional to 298,638 and 462,402

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Solution

The third proportional to 298,638 and 462,402 is: 715,969.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,638 : 462,402 = 462,402 : x
  2. Step 2: Convert to fraction form
    298,638/462,402 = 462,402/x
  3. Step 3: Cross multiply
    298,638x = 462,402 × 462,402
  4. Step 4: Simplify right side
    298,638x = 213,815,609,604
  5. Step 5: Solve for x
    x = 213,815,609,604/298,638
  6. Step 6: Final answer
    x = 715,969.20

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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.