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Finding the Fourth Proportional to 1,381,517, 2,072,392.86 and 384,245

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Solution

The fourth proportional to 1,381,517, 2,072,392.86 and 384,245 is: 576,400.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,381,517 : 2,072,392.86 = 384,245 : x
  2. Step 2: Convert to fraction form
    1,381,517/2,072,392.86 = 384,245/x
  3. Step 3: Cross multiply
    1,381,517x = 2,072,392.86 × 384,245
  4. Step 4: Simplify right side
    1,381,517x = 796,306,594,490.70
  5. Step 5: Solve for x
    x = 796,306,594,490.70/1,381,517
  6. Step 6: Final answer
    x = 576,400.14

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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.