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Finding the Third Proportional to 318,888 and 676,656

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Solution

The third proportional to 318,888 and 676,656 is: 1,435,812.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,888 : 676,656 = 676,656 : x
  2. Step 2: Convert to fraction form
    318,888/676,656 = 676,656/x
  3. Step 3: Cross multiply
    318,888x = 676,656 × 676,656
  4. Step 4: Simplify right side
    318,888x = 457,863,342,336
  5. Step 5: Solve for x
    x = 457,863,342,336/318,888
  6. Step 6: Final answer
    x = 1,435,812.39

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.