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Finding the Third Proportional to 366,920 and 561,322

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Solution

The third proportional to 366,920 and 561,322 is: 858,722.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,920 : 561,322 = 561,322 : x
  2. Step 2: Convert to fraction form
    366,920/561,322 = 561,322/x
  3. Step 3: Cross multiply
    366,920x = 561,322 × 561,322
  4. Step 4: Simplify right side
    366,920x = 315,082,387,684
  5. Step 5: Solve for x
    x = 315,082,387,684/366,920
  6. Step 6: Final answer
    x = 858,722.30

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.