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Finding the Fourth Proportional to 500,853.60, 691,174.08 and 274,498.56

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Solution

The fourth proportional to 500,853.60, 691,174.08 and 274,498.56 is: 378,805.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,853.60 : 691,174.08 = 274,498.56 : x
  2. Step 2: Convert to fraction form
    500,853.60/691,174.08 = 274,498.56/x
  3. Step 3: Cross multiply
    500,853.60x = 691,174.08 × 274,498.56
  4. Step 4: Simplify right side
    500,853.60x = 189,726,289,669.33
  5. Step 5: Solve for x
    x = 189,726,289,669.33/500,853.60
  6. Step 6: Final answer
    x = 378,805.88

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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.