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Finding the Fourth Proportional to 494,479.20, 741,718.80 and 489,230.40

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Solution

The fourth proportional to 494,479.20, 741,718.80 and 489,230.40 is: 733,845.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,479.20 : 741,718.80 = 489,230.40 : x
  2. Step 2: Convert to fraction form
    494,479.20/741,718.80 = 489,230.40/x
  3. Step 3: Cross multiply
    494,479.20x = 741,718.80 × 489,230.40
  4. Step 4: Simplify right side
    494,479.20x = 362,871,385,211.52
  5. Step 5: Solve for x
    x = 362,871,385,211.52/494,479.20
  6. Step 6: Final answer
    x = 733,845.60

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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.