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Finding the Third Proportional to 298,736 and 656,368

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Solution

The third proportional to 298,736 and 656,368 is: 1,442,139.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,736 : 656,368 = 656,368 : x
  2. Step 2: Convert to fraction form
    298,736/656,368 = 656,368/x
  3. Step 3: Cross multiply
    298,736x = 656,368 × 656,368
  4. Step 4: Simplify right side
    298,736x = 430,818,951,424
  5. Step 5: Solve for x
    x = 430,818,951,424/298,736
  6. Step 6: Final answer
    x = 1,442,139.39

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.