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Finding the Fourth Proportional to 491,872.70, 737,809.21 and 379,716.66

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Solution

The fourth proportional to 491,872.70, 737,809.21 and 379,716.66 is: 569,575.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,872.70 : 737,809.21 = 379,716.66 : x
  2. Step 2: Convert to fraction form
    491,872.70/737,809.21 = 379,716.66/x
  3. Step 3: Cross multiply
    491,872.70x = 737,809.21 × 379,716.66
  4. Step 4: Simplify right side
    491,872.70x = 280,158,447,277.18
  5. Step 5: Solve for x
    x = 280,158,447,277.18/491,872.70
  6. Step 6: Final answer
    x = 569,575.11

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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.