Home / 820,930.80-1,231,396.20-221,984.40

Finding the Fourth Proportional to 820,930.80, 1,231,396.20 and 221,984.40

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Solution

The fourth proportional to 820,930.80, 1,231,396.20 and 221,984.40 is: 332,976.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,930.80 : 1,231,396.20 = 221,984.40 : x
  2. Step 2: Convert to fraction form
    820,930.80/1,231,396.20 = 221,984.40/x
  3. Step 3: Cross multiply
    820,930.80x = 1,231,396.20 × 221,984.40
  4. Step 4: Simplify right side
    820,930.80x = 273,350,746,619.28
  5. Step 5: Solve for x
    x = 273,350,746,619.28/820,930.80
  6. Step 6: Final answer
    x = 332,976.60

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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.