Home / 809,721.20-1,215,100.20-472,761.20

Finding the Fourth Proportional to 809,721.20, 1,215,100.20 and 472,761.20

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Solution

The fourth proportional to 809,721.20, 1,215,100.20 and 472,761.20 is: 709,444.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,721.20 : 1,215,100.20 = 472,761.20 : x
  2. Step 2: Convert to fraction form
    809,721.20/1,215,100.20 = 472,761.20/x
  3. Step 3: Cross multiply
    809,721.20x = 1,215,100.20 × 472,761.20
  4. Step 4: Simplify right side
    809,721.20x = 574,452,228,672.24
  5. Step 5: Solve for x
    x = 574,452,228,672.24/809,721.20
  6. Step 6: Final answer
    x = 709,444.47

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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.