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Finding the Third Proportional to 331,348 and 518,345

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Solution

The third proportional to 331,348 and 518,345 is: 810,874.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,348 : 518,345 = 518,345 : x
  2. Step 2: Convert to fraction form
    331,348/518,345 = 518,345/x
  3. Step 3: Cross multiply
    331,348x = 518,345 × 518,345
  4. Step 4: Simplify right side
    331,348x = 268,681,539,025
  5. Step 5: Solve for x
    x = 268,681,539,025/331,348
  6. Step 6: Final answer
    x = 810,874.18

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.