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Finding the Third Proportional to 397,175 and 864,238

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Solution

The third proportional to 397,175 and 864,238 is: 1,880,549.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,175 : 864,238 = 864,238 : x
  2. Step 2: Convert to fraction form
    397,175/864,238 = 864,238/x
  3. Step 3: Cross multiply
    397,175x = 864,238 × 864,238
  4. Step 4: Simplify right side
    397,175x = 746,907,320,644
  5. Step 5: Solve for x
    x = 746,907,320,644/397,175
  6. Step 6: Final answer
    x = 1,880,549.68

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.