Home / 539,790.19-809,638.24-219,975.61

Finding the Fourth Proportional to 539,790.19, 809,638.24 and 219,975.61

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Solution

The fourth proportional to 539,790.19, 809,638.24 and 219,975.61 is: 329,944.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,790.19 : 809,638.24 = 219,975.61 : x
  2. Step 2: Convert to fraction form
    539,790.19/809,638.24 = 219,975.61/x
  3. Step 3: Cross multiply
    539,790.19x = 809,638.24 × 219,975.61
  4. Step 4: Simplify right side
    539,790.19x = 178,100,665,723.33
  5. Step 5: Solve for x
    x = 178,100,665,723.33/539,790.19
  6. Step 6: Final answer
    x = 329,944.24

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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.