Home / 385,831.20-580,129.20-325,005.60

Finding the Fourth Proportional to 385,831.20, 580,129.20 and 325,005.60

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Solution

The fourth proportional to 385,831.20, 580,129.20 and 325,005.60 is: 488,672.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,831.20 : 580,129.20 = 325,005.60 : x
  2. Step 2: Convert to fraction form
    385,831.20/580,129.20 = 325,005.60/x
  3. Step 3: Cross multiply
    385,831.20x = 580,129.20 × 325,005.60
  4. Step 4: Simplify right side
    385,831.20x = 188,545,238,723.52
  5. Step 5: Solve for x
    x = 188,545,238,723.52/385,831.20
  6. Step 6: Final answer
    x = 488,672.87

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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.