Home / 781,651.95-1,172,103.40-381,824.61

Finding the Fourth Proportional to 781,651.95, 1,172,103.40 and 381,824.61

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Solution

The fourth proportional to 781,651.95, 1,172,103.40 and 381,824.61 is: 572,553.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,651.95 : 1,172,103.40 = 381,824.61 : x
  2. Step 2: Convert to fraction form
    781,651.95/1,172,103.40 = 381,824.61/x
  3. Step 3: Cross multiply
    781,651.95x = 1,172,103.40 × 381,824.61
  4. Step 4: Simplify right side
    781,651.95x = 447,537,923,584.67
  5. Step 5: Solve for x
    x = 447,537,923,584.67/781,651.95
  6. Step 6: Final answer
    x = 572,553.97

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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.