Home / 743,020.42-1,025,372.12-420,793.24

Finding the Fourth Proportional to 743,020.42, 1,025,372.12 and 420,793.24

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Solution

The fourth proportional to 743,020.42, 1,025,372.12 and 420,793.24 is: 580,696.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,020.42 : 1,025,372.12 = 420,793.24 : x
  2. Step 2: Convert to fraction form
    743,020.42/1,025,372.12 = 420,793.24/x
  3. Step 3: Cross multiply
    743,020.42x = 1,025,372.12 × 420,793.24
  4. Step 4: Simplify right side
    743,020.42x = 431,469,656,580.47
  5. Step 5: Solve for x
    x = 431,469,656,580.47/743,020.42
  6. Step 6: Final answer
    x = 580,696.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.