Home / 820,394.20-1,230,591.31-221,355.36

Finding the Fourth Proportional to 820,394.20, 1,230,591.31 and 221,355.36

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Solution

The fourth proportional to 820,394.20, 1,230,591.31 and 221,355.36 is: 332,033.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,394.20 : 1,230,591.31 = 221,355.36 : x
  2. Step 2: Convert to fraction form
    820,394.20/1,230,591.31 = 221,355.36/x
  3. Step 3: Cross multiply
    820,394.20x = 1,230,591.31 × 221,355.36
  4. Step 4: Simplify right side
    820,394.20x = 272,397,983,382.79
  5. Step 5: Solve for x
    x = 272,397,983,382.79/820,394.20
  6. Step 6: Final answer
    x = 332,033.04

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Similar ratio
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1.5x scale

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.