Home / 388,839.74-582,365.37-324,512.78

Finding the Fourth Proportional to 388,839.74, 582,365.37 and 324,512.78

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Solution

The fourth proportional to 388,839.74, 582,365.37 and 324,512.78 is: 486,022.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,839.74 : 582,365.37 = 324,512.78 : x
  2. Step 2: Convert to fraction form
    388,839.74/582,365.37 = 324,512.78/x
  3. Step 3: Cross multiply
    388,839.74x = 582,365.37 × 324,512.78
  4. Step 4: Simplify right side
    388,839.74x = 188,985,005,194.43
  5. Step 5: Solve for x
    x = 188,985,005,194.43/388,839.74
  6. Step 6: Final answer
    x = 486,022.87

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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.