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Finding the Fourth Proportional to 452,601.92, 678,902.78 and 115,643.21

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Solution

The fourth proportional to 452,601.92, 678,902.78 and 115,643.21 is: 173,464.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,601.92 : 678,902.78 = 115,643.21 : x
  2. Step 2: Convert to fraction form
    452,601.92/678,902.78 = 115,643.21/x
  3. Step 3: Cross multiply
    452,601.92x = 678,902.78 × 115,643.21
  4. Step 4: Simplify right side
    452,601.92x = 78,510,493,651.72
  5. Step 5: Solve for x
    x = 78,510,493,651.72/452,601.92
  6. Step 6: Final answer
    x = 173,464.78

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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.