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Finding the Fourth Proportional to 381,674.70, 572,512.05 and 372,926.70

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Solution

The fourth proportional to 381,674.70, 572,512.05 and 372,926.70 is: 559,390.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,674.70 : 572,512.05 = 372,926.70 : x
  2. Step 2: Convert to fraction form
    381,674.70/572,512.05 = 372,926.70/x
  3. Step 3: Cross multiply
    381,674.70x = 572,512.05 × 372,926.70
  4. Step 4: Simplify right side
    381,674.70x = 213,505,029,516.74
  5. Step 5: Solve for x
    x = 213,505,029,516.74/381,674.70
  6. Step 6: Final answer
    x = 559,390.05

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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.