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Finding the Fourth Proportional to 500,519.44, 690,717.12 and 274,168.72

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Solution

The fourth proportional to 500,519.44, 690,717.12 and 274,168.72 is: 378,352.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,519.44 : 690,717.12 = 274,168.72 : x
  2. Step 2: Convert to fraction form
    500,519.44/690,717.12 = 274,168.72/x
  3. Step 3: Cross multiply
    500,519.44x = 690,717.12 × 274,168.72
  4. Step 4: Simplify right side
    500,519.44x = 189,373,028,672.49
  5. Step 5: Solve for x
    x = 189,373,028,672.49/500,519.44
  6. Step 6: Final answer
    x = 378,352.99

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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.