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Finding the Fourth Proportional to 580,308.28, 800,620.12 and 379,220.92

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Solution

The fourth proportional to 580,308.28, 800,620.12 and 379,220.92 is: 523,190.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,308.28 : 800,620.12 = 379,220.92 : x
  2. Step 2: Convert to fraction form
    580,308.28/800,620.12 = 379,220.92/x
  3. Step 3: Cross multiply
    580,308.28x = 800,620.12 × 379,220.92
  4. Step 4: Simplify right side
    580,308.28x = 303,611,898,476.91
  5. Step 5: Solve for x
    x = 303,611,898,476.91/580,308.28
  6. Step 6: Final answer
    x = 523,190.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.