Home / 447,785.74-671,941.05-321,289.66

Finding the Fourth Proportional to 447,785.74, 671,941.05 and 321,289.66

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Solution

The fourth proportional to 447,785.74, 671,941.05 and 321,289.66 is: 482,122.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,785.74 : 671,941.05 = 321,289.66 : x
  2. Step 2: Convert to fraction form
    447,785.74/671,941.05 = 321,289.66/x
  3. Step 3: Cross multiply
    447,785.74x = 671,941.05 × 321,289.66
  4. Step 4: Simplify right side
    447,785.74x = 215,887,711,494.54
  5. Step 5: Solve for x
    x = 215,887,711,494.54/447,785.74
  6. Step 6: Final answer
    x = 482,122.79

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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.