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Finding the Fourth Proportional to 392,704.40, 588,365.40 and 337,408.40

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Solution

The fourth proportional to 392,704.40, 588,365.40 and 337,408.40 is: 505,518.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,704.40 : 588,365.40 = 337,408.40 : x
  2. Step 2: Convert to fraction form
    392,704.40/588,365.40 = 337,408.40/x
  3. Step 3: Cross multiply
    392,704.40x = 588,365.40 × 337,408.40
  4. Step 4: Simplify right side
    392,704.40x = 198,519,428,229.36
  5. Step 5: Solve for x
    x = 198,519,428,229.36/392,704.40
  6. Step 6: Final answer
    x = 505,518.73

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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.