Home / 1,280,717.20-1,922,375.71-641,478.97

Finding the Fourth Proportional to 1,280,717.20, 1,922,375.71 and 641,478.97

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Solution

The fourth proportional to 1,280,717.20, 1,922,375.71 and 641,478.97 is: 962,869.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,717.20 : 1,922,375.71 = 641,478.97 : x
  2. Step 2: Convert to fraction form
    1,280,717.20/1,922,375.71 = 641,478.97/x
  3. Step 3: Cross multiply
    1,280,717.20x = 1,922,375.71 × 641,478.97
  4. Step 4: Simplify right side
    1,280,717.20x = 1,233,163,586,397.80
  5. Step 5: Solve for x
    x = 1,233,163,586,397.80/1,280,717.20
  6. Step 6: Final answer
    x = 962,869.55

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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.