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Finding the Fourth Proportional to 853,151.87, 1,279,372.73 and 347,369.87

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Solution

The fourth proportional to 853,151.87, 1,279,372.73 and 347,369.87 is: 520,910.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,151.87 : 1,279,372.73 = 347,369.87 : x
  2. Step 2: Convert to fraction form
    853,151.87/1,279,372.73 = 347,369.87/x
  3. Step 3: Cross multiply
    853,151.87x = 1,279,372.73 × 347,369.87
  4. Step 4: Simplify right side
    853,151.87x = 444,415,530,767.93
  5. Step 5: Solve for x
    x = 444,415,530,767.93/853,151.87
  6. Step 6: Final answer
    x = 520,910.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.