Home / 805,425.20-1,111,489.68-442,871.92

Finding the Fourth Proportional to 805,425.20, 1,111,489.68 and 442,871.92

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Solution

The fourth proportional to 805,425.20, 1,111,489.68 and 442,871.92 is: 611,164.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,425.20 : 1,111,489.68 = 442,871.92 : x
  2. Step 2: Convert to fraction form
    805,425.20/1,111,489.68 = 442,871.92/x
  3. Step 3: Cross multiply
    805,425.20x = 1,111,489.68 × 442,871.92
  4. Step 4: Simplify right side
    805,425.20x = 492,247,568,641.79
  5. Step 5: Solve for x
    x = 492,247,568,641.79/805,425.20
  6. Step 6: Final answer
    x = 611,164.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.