Home / 920,473.42-1,380,677.31-321,432.25

Finding the Fourth Proportional to 920,473.42, 1,380,677.31 and 321,432.25

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Solution

The fourth proportional to 920,473.42, 1,380,677.31 and 321,432.25 is: 482,136.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,473.42 : 1,380,677.31 = 321,432.25 : x
  2. Step 2: Convert to fraction form
    920,473.42/1,380,677.31 = 321,432.25/x
  3. Step 3: Cross multiply
    920,473.42x = 1,380,677.31 × 321,432.25
  4. Step 4: Simplify right side
    920,473.42x = 443,794,207,373.86
  5. Step 5: Solve for x
    x = 443,794,207,373.86/920,473.42
  6. Step 6: Final answer
    x = 482,136.91

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Double scale
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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.