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Finding the Fourth Proportional to 579,222.42, 867,015.99 and 398,251.82

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Solution

The fourth proportional to 579,222.42, 867,015.99 and 398,251.82 is: 596,127.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,222.42 : 867,015.99 = 398,251.82 : x
  2. Step 2: Convert to fraction form
    579,222.42/867,015.99 = 398,251.82/x
  3. Step 3: Cross multiply
    579,222.42x = 867,015.99 × 398,251.82
  4. Step 4: Simplify right side
    579,222.42x = 345,290,691,651.52
  5. Step 5: Solve for x
    x = 345,290,691,651.52/579,222.42
  6. Step 6: Final answer
    x = 596,127.98

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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.