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Finding the Third Proportional to 394,425 and 863,480

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Solution

The third proportional to 394,425 and 863,480 is: 1,890,340.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,425 : 863,480 = 863,480 : x
  2. Step 2: Convert to fraction form
    394,425/863,480 = 863,480/x
  3. Step 3: Cross multiply
    394,425x = 863,480 × 863,480
  4. Step 4: Simplify right side
    394,425x = 745,597,710,400
  5. Step 5: Solve for x
    x = 745,597,710,400/394,425
  6. Step 6: Final answer
    x = 1,890,340.90

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.