Home / 605,629.20-908,443.80-381,680.40

Finding the Fourth Proportional to 605,629.20, 908,443.80 and 381,680.40

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Solution

The fourth proportional to 605,629.20, 908,443.80 and 381,680.40 is: 572,520.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,629.20 : 908,443.80 = 381,680.40 : x
  2. Step 2: Convert to fraction form
    605,629.20/908,443.80 = 381,680.40/x
  3. Step 3: Cross multiply
    605,629.20x = 908,443.80 × 381,680.40
  4. Step 4: Simplify right side
    605,629.20x = 346,735,192,961.52
  5. Step 5: Solve for x
    x = 346,735,192,961.52/605,629.20
  6. Step 6: Final answer
    x = 572,520.60

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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.