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Finding the Fourth Proportional to 500,523.44, 690,722.64 and 274,172.72

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Solution

The fourth proportional to 500,523.44, 690,722.64 and 274,172.72 is: 378,358.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,523.44 : 690,722.64 = 274,172.72 : x
  2. Step 2: Convert to fraction form
    500,523.44/690,722.64 = 274,172.72/x
  3. Step 3: Cross multiply
    500,523.44x = 690,722.64 × 274,172.72
  4. Step 4: Simplify right side
    500,523.44x = 189,377,304,974.38
  5. Step 5: Solve for x
    x = 189,377,304,974.38/500,523.44
  6. Step 6: Final answer
    x = 378,358.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.