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Finding the Third Proportional to 393,928 and 576,920

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Solution

The third proportional to 393,928 and 576,920 is: 844,917.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,928 : 576,920 = 576,920 : x
  2. Step 2: Convert to fraction form
    393,928/576,920 = 576,920/x
  3. Step 3: Cross multiply
    393,928x = 576,920 × 576,920
  4. Step 4: Simplify right side
    393,928x = 332,836,686,400
  5. Step 5: Solve for x
    x = 332,836,686,400/393,928
  6. Step 6: Final answer
    x = 844,917.56

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.