Home / 487,827.20-731,740.82-321,576.32

Finding the Fourth Proportional to 487,827.20, 731,740.82 and 321,576.32

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Solution

The fourth proportional to 487,827.20, 731,740.82 and 321,576.32 is: 482,364.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,827.20 : 731,740.82 = 321,576.32 : x
  2. Step 2: Convert to fraction form
    487,827.20/731,740.82 = 321,576.32/x
  3. Step 3: Cross multiply
    487,827.20x = 731,740.82 × 321,576.32
  4. Step 4: Simplify right side
    487,827.20x = 235,310,520,310.85
  5. Step 5: Solve for x
    x = 235,310,520,310.85/487,827.20
  6. Step 6: Final answer
    x = 482,364.49

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Similar ratio
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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.