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Finding the Fourth Proportional to 491,874.70, 737,812.21 and 379,718.66

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Solution

The fourth proportional to 491,874.70, 737,812.21 and 379,718.66 is: 569,578.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,874.70 : 737,812.21 = 379,718.66 : x
  2. Step 2: Convert to fraction form
    491,874.70/737,812.21 = 379,718.66/x
  3. Step 3: Cross multiply
    491,874.70x = 737,812.21 × 379,718.66
  4. Step 4: Simplify right side
    491,874.70x = 280,161,063,712.84
  5. Step 5: Solve for x
    x = 280,161,063,712.84/491,874.70
  6. Step 6: Final answer
    x = 569,578.11

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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.