Home / 447,784.74-671,939.55-321,288.66

Finding the Fourth Proportional to 447,784.74, 671,939.55 and 321,288.66

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Solution

The fourth proportional to 447,784.74, 671,939.55 and 321,288.66 is: 482,121.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,784.74 : 671,939.55 = 321,288.66 : x
  2. Step 2: Convert to fraction form
    447,784.74/671,939.55 = 321,288.66/x
  3. Step 3: Cross multiply
    447,784.74x = 671,939.55 × 321,288.66
  4. Step 4: Simplify right side
    447,784.74x = 215,886,557,620.50
  5. Step 5: Solve for x
    x = 215,886,557,620.50/447,784.74
  6. Step 6: Final answer
    x = 482,121.29

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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.