Home / 809,626.40-1,215,217.20-410,717.60

Finding the Fourth Proportional to 809,626.40, 1,215,217.20 and 410,717.60

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Solution

The fourth proportional to 809,626.40, 1,215,217.20 and 410,717.60 is: 616,470.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,626.40 : 1,215,217.20 = 410,717.60 : x
  2. Step 2: Convert to fraction form
    809,626.40/1,215,217.20 = 410,717.60/x
  3. Step 3: Cross multiply
    809,626.40x = 1,215,217.20 × 410,717.60
  4. Step 4: Simplify right side
    809,626.40x = 499,111,091,862.72
  5. Step 5: Solve for x
    x = 499,111,091,862.72/809,626.40
  6. Step 6: Final answer
    x = 616,470.87

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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.