Home / 539,789.19-809,636.74-219,974.61

Finding the Fourth Proportional to 539,789.19, 809,636.74 and 219,974.61

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Solution

The fourth proportional to 539,789.19, 809,636.74 and 219,974.61 is: 329,942.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,789.19 : 809,636.74 = 219,974.61 : x
  2. Step 2: Convert to fraction form
    539,789.19/809,636.74 = 219,974.61/x
  3. Step 3: Cross multiply
    539,789.19x = 809,636.74 × 219,974.61
  4. Step 4: Simplify right side
    539,789.19x = 178,099,526,950.95
  5. Step 5: Solve for x
    x = 178,099,526,950.95/539,789.19
  6. Step 6: Final answer
    x = 329,942.75

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1.5x scale

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.