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Finding the Third Proportional to 378,228 and 806,520

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Solution

The third proportional to 378,228 and 806,520 is: 1,719,794.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,228 : 806,520 = 806,520 : x
  2. Step 2: Convert to fraction form
    378,228/806,520 = 806,520/x
  3. Step 3: Cross multiply
    378,228x = 806,520 × 806,520
  4. Step 4: Simplify right side
    378,228x = 650,474,510,400
  5. Step 5: Solve for x
    x = 650,474,510,400/378,228
  6. Step 6: Final answer
    x = 1,719,794.70

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.