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Finding the Third Proportional to 378,166 and 806,390

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Solution

The third proportional to 378,166 and 806,390 is: 1,719,522.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,166 : 806,390 = 806,390 : x
  2. Step 2: Convert to fraction form
    378,166/806,390 = 806,390/x
  3. Step 3: Cross multiply
    378,166x = 806,390 × 806,390
  4. Step 4: Simplify right side
    378,166x = 650,264,832,100
  5. Step 5: Solve for x
    x = 650,264,832,100/378,166
  6. Step 6: Final answer
    x = 1,719,522.20

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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.