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Finding the Third Proportional to 381,384 and 828,376

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Solution

The third proportional to 381,384 and 828,376 is: 1,799,254.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,384 : 828,376 = 828,376 : x
  2. Step 2: Convert to fraction form
    381,384/828,376 = 828,376/x
  3. Step 3: Cross multiply
    381,384x = 828,376 × 828,376
  4. Step 4: Simplify right side
    381,384x = 686,206,797,376
  5. Step 5: Solve for x
    x = 686,206,797,376/381,384
  6. Step 6: Final answer
    x = 1,799,254.29

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.