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Finding the Third Proportional to 397,173 and 864,231

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Solution

The third proportional to 397,173 and 864,231 is: 1,880,528.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,173 : 864,231 = 864,231 : x
  2. Step 2: Convert to fraction form
    397,173/864,231 = 864,231/x
  3. Step 3: Cross multiply
    397,173x = 864,231 × 864,231
  4. Step 4: Simplify right side
    397,173x = 746,895,221,361
  5. Step 5: Solve for x
    x = 746,895,221,361/397,173
  6. Step 6: Final answer
    x = 1,880,528.69

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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.