Home / 781,889.53-1,079,000.26-442,357.78

Finding the Fourth Proportional to 781,889.53, 1,079,000.26 and 442,357.78

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Solution

The fourth proportional to 781,889.53, 1,079,000.26 and 442,357.78 is: 610,449.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,889.53 : 1,079,000.26 = 442,357.78 : x
  2. Step 2: Convert to fraction form
    781,889.53/1,079,000.26 = 442,357.78/x
  3. Step 3: Cross multiply
    781,889.53x = 1,079,000.26 × 442,357.78
  4. Step 4: Simplify right side
    781,889.53x = 477,304,159,633.02
  5. Step 5: Solve for x
    x = 477,304,159,633.02/781,889.53
  6. Step 6: Final answer
    x = 610,449.61

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1.5x scale

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.