Home / 811,801.20-1,217,778.60-220,825.20

Finding the Fourth Proportional to 811,801.20, 1,217,778.60 and 220,825.20

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Solution

The fourth proportional to 811,801.20, 1,217,778.60 and 220,825.20 is: 331,258.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,801.20 : 1,217,778.60 = 220,825.20 : x
  2. Step 2: Convert to fraction form
    811,801.20/1,217,778.60 = 220,825.20/x
  3. Step 3: Cross multiply
    811,801.20x = 1,217,778.60 × 220,825.20
  4. Step 4: Simplify right side
    811,801.20x = 268,916,202,900.72
  5. Step 5: Solve for x
    x = 268,916,202,900.72/811,801.20
  6. Step 6: Final answer
    x = 331,258.69

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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.