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Finding the Fourth Proportional to 500,534.37, 690,754.64 and 274,179.87

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Solution

The fourth proportional to 500,534.37, 690,754.64 and 274,179.87 is: 378,377.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,534.37 : 690,754.64 = 274,179.87 : x
  2. Step 2: Convert to fraction form
    500,534.37/690,754.64 = 274,179.87/x
  3. Step 3: Cross multiply
    500,534.37x = 690,754.64 × 274,179.87
  4. Step 4: Simplify right side
    500,534.37x = 189,391,016,026.20
  5. Step 5: Solve for x
    x = 189,391,016,026.20/500,534.37
  6. Step 6: Final answer
    x = 378,377.64

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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.