Home / 467,400.85-645,145.37-276,480.61

Finding the Fourth Proportional to 467,400.85, 645,145.37 and 276,480.61

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Solution

The fourth proportional to 467,400.85, 645,145.37 and 276,480.61 is: 381,621.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    467,400.85 : 645,145.37 = 276,480.61 : x
  2. Step 2: Convert to fraction form
    467,400.85/645,145.37 = 276,480.61/x
  3. Step 3: Cross multiply
    467,400.85x = 645,145.37 × 276,480.61
  4. Step 4: Simplify right side
    467,400.85x = 178,370,185,436.28
  5. Step 5: Solve for x
    x = 178,370,185,436.28/467,400.85
  6. Step 6: Final answer
    x = 381,621.44

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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.