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Finding the Third Proportional to 416,680 and 862,900

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Solution

The third proportional to 416,680 and 862,900 is: 1,786,974.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,680 : 862,900 = 862,900 : x
  2. Step 2: Convert to fraction form
    416,680/862,900 = 862,900/x
  3. Step 3: Cross multiply
    416,680x = 862,900 × 862,900
  4. Step 4: Simplify right side
    416,680x = 744,596,410,000
  5. Step 5: Solve for x
    x = 744,596,410,000/416,680
  6. Step 6: Final answer
    x = 1,786,974.20

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.