Home / 1,332,332.31-1,998,479.90-321,445.78

Finding the Fourth Proportional to 1,332,332.31, 1,998,479.90 and 321,445.78

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Solution

The fourth proportional to 1,332,332.31, 1,998,479.90 and 321,445.78 is: 482,164.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,332,332.31 : 1,998,479.90 = 321,445.78 : x
  2. Step 2: Convert to fraction form
    1,332,332.31/1,998,479.90 = 321,445.78/x
  3. Step 3: Cross multiply
    1,332,332.31x = 1,998,479.90 × 321,445.78
  4. Step 4: Simplify right side
    1,332,332.31x = 642,402,930,269.82
  5. Step 5: Solve for x
    x = 642,402,930,269.82/1,332,332.31
  6. Step 6: Final answer
    x = 482,164.19

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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.