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Finding the Fourth Proportional to 494,571.20, 741,856.80 and 489,322.40

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Solution

The fourth proportional to 494,571.20, 741,856.80 and 489,322.40 is: 733,983.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,571.20 : 741,856.80 = 489,322.40 : x
  2. Step 2: Convert to fraction form
    494,571.20/741,856.80 = 489,322.40/x
  3. Step 3: Cross multiply
    494,571.20x = 741,856.80 × 489,322.40
  4. Step 4: Simplify right side
    494,571.20x = 363,007,149,832.32
  5. Step 5: Solve for x
    x = 363,007,149,832.32/494,571.20
  6. Step 6: Final answer
    x = 733,983.60

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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.