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Finding the Fourth Proportional to 603,516.88, 905,471.88 and 287,932.96

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Solution

The fourth proportional to 603,516.88, 905,471.88 and 287,932.96 is: 431,993.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,516.88 : 905,471.88 = 287,932.96 : x
  2. Step 2: Convert to fraction form
    603,516.88/905,471.88 = 287,932.96/x
  3. Step 3: Cross multiply
    603,516.88x = 905,471.88 × 287,932.96
  4. Step 4: Simplify right side
    603,516.88x = 260,715,198,605.17
  5. Step 5: Solve for x
    x = 260,715,198,605.17/603,516.88
  6. Step 6: Final answer
    x = 431,993.22

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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.