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Finding the Third Proportional to 330,990 and 496,377

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Solution

The third proportional to 330,990 and 496,377 is: 744,403.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,990 : 496,377 = 496,377 : x
  2. Step 2: Convert to fraction form
    330,990/496,377 = 496,377/x
  3. Step 3: Cross multiply
    330,990x = 496,377 × 496,377
  4. Step 4: Simplify right side
    330,990x = 246,390,126,129
  5. Step 5: Solve for x
    x = 246,390,126,129/330,990
  6. Step 6: Final answer
    x = 744,403.54

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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.