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Finding the Third Proportional to 381,552 and 828,712

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Solution

The third proportional to 381,552 and 828,712 is: 1,799,921.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,552 : 828,712 = 828,712 : x
  2. Step 2: Convert to fraction form
    381,552/828,712 = 828,712/x
  3. Step 3: Cross multiply
    381,552x = 828,712 × 828,712
  4. Step 4: Simplify right side
    381,552x = 686,763,578,944
  5. Step 5: Solve for x
    x = 686,763,578,944/381,552
  6. Step 6: Final answer
    x = 1,799,921.32

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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.