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Finding the Third Proportional to 331,318 and 715,530

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Solution

The third proportional to 331,318 and 715,530 is: 1,545,292.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,318 : 715,530 = 715,530 : x
  2. Step 2: Convert to fraction form
    331,318/715,530 = 715,530/x
  3. Step 3: Cross multiply
    331,318x = 715,530 × 715,530
  4. Step 4: Simplify right side
    331,318x = 511,983,180,900
  5. Step 5: Solve for x
    x = 511,983,180,900/331,318
  6. Step 6: Final answer
    x = 1,545,292.38

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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.