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Finding the Third Proportional to 381,387 and 822,750

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Solution

The third proportional to 381,387 and 822,750 is: 1,774,883.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,387 : 822,750 = 822,750 : x
  2. Step 2: Convert to fraction form
    381,387/822,750 = 822,750/x
  3. Step 3: Cross multiply
    381,387x = 822,750 × 822,750
  4. Step 4: Simplify right side
    381,387x = 676,917,562,500
  5. Step 5: Solve for x
    x = 676,917,562,500/381,387
  6. Step 6: Final answer
    x = 1,774,883.68

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.