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Finding the Third Proportional to 298,694 and 644,932

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Solution

The third proportional to 298,694 and 644,932 is: 1,392,519.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,694 : 644,932 = 644,932 : x
  2. Step 2: Convert to fraction form
    298,694/644,932 = 644,932/x
  3. Step 3: Cross multiply
    298,694x = 644,932 × 644,932
  4. Step 4: Simplify right side
    298,694x = 415,937,284,624
  5. Step 5: Solve for x
    x = 415,937,284,624/298,694
  6. Step 6: Final answer
    x = 1,392,519.72

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.