Home / 487,823.45-731,735.18-321,572.57

Finding the Fourth Proportional to 487,823.45, 731,735.18 and 321,572.57

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Solution

The fourth proportional to 487,823.45, 731,735.18 and 321,572.57 is: 482,358.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,823.45 : 731,735.18 = 321,572.57 : x
  2. Step 2: Convert to fraction form
    487,823.45/731,735.18 = 321,572.57/x
  3. Step 3: Cross multiply
    487,823.45x = 731,735.18 × 321,572.57
  4. Step 4: Simplify right side
    487,823.45x = 235,305,965,025.28
  5. Step 5: Solve for x
    x = 235,305,965,025.28/487,823.45
  6. Step 6: Final answer
    x = 482,358.86

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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.