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Finding the Third Proportional to 280,399 and 676,018

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Solution

The third proportional to 280,399 and 676,018 is: 1,629,821.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,399 : 676,018 = 676,018 : x
  2. Step 2: Convert to fraction form
    280,399/676,018 = 676,018/x
  3. Step 3: Cross multiply
    280,399x = 676,018 × 676,018
  4. Step 4: Simplify right side
    280,399x = 457,000,336,324
  5. Step 5: Solve for x
    x = 457,000,336,324/280,399
  6. Step 6: Final answer
    x = 1,629,821.56

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Why These Related Problems?

These problems maintain the same ratio (2.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.