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Finding the Third Proportional to 425,920 and 659,400

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Solution

The third proportional to 425,920 and 659,400 is: 1,020,868.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,920 : 659,400 = 659,400 : x
  2. Step 2: Convert to fraction form
    425,920/659,400 = 659,400/x
  3. Step 3: Cross multiply
    425,920x = 659,400 × 659,400
  4. Step 4: Simplify right side
    425,920x = 434,808,360,000
  5. Step 5: Solve for x
    x = 434,808,360,000/425,920
  6. Step 6: Final answer
    x = 1,020,868.61

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.