Home / 1,332,331.31-1,998,478.40-321,444.78

Finding the Fourth Proportional to 1,332,331.31, 1,998,478.40 and 321,444.78

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Solution

The fourth proportional to 1,332,331.31, 1,998,478.40 and 321,444.78 is: 482,162.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,332,331.31 : 1,998,478.40 = 321,444.78 : x
  2. Step 2: Convert to fraction form
    1,332,331.31/1,998,478.40 = 321,444.78/x
  3. Step 3: Cross multiply
    1,332,331.31x = 1,998,478.40 × 321,444.78
  4. Step 4: Simplify right side
    1,332,331.31x = 642,400,449,622.75
  5. Step 5: Solve for x
    x = 642,400,449,622.75/1,332,331.31
  6. Step 6: Final answer
    x = 482,162.69

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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.