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Finding the Third Proportional to 398,247 and 859,827

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Solution

The third proportional to 398,247 and 859,827 is: 1,856,391.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,247 : 859,827 = 859,827 : x
  2. Step 2: Convert to fraction form
    398,247/859,827 = 859,827/x
  3. Step 3: Cross multiply
    398,247x = 859,827 × 859,827
  4. Step 4: Simplify right side
    398,247x = 739,302,469,929
  5. Step 5: Solve for x
    x = 739,302,469,929/398,247
  6. Step 6: Final answer
    x = 1,856,391.81

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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.