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Finding the Third Proportional to 382,086 and 820,530

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Solution

The third proportional to 382,086 and 820,530 is: 1,762,088.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,086 : 820,530 = 820,530 : x
  2. Step 2: Convert to fraction form
    382,086/820,530 = 820,530/x
  3. Step 3: Cross multiply
    382,086x = 820,530 × 820,530
  4. Step 4: Simplify right side
    382,086x = 673,269,480,900
  5. Step 5: Solve for x
    x = 673,269,480,900/382,086
  6. Step 6: Final answer
    x = 1,762,088.85

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.