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Finding the Fourth Proportional to 494,460.20, 741,690.30 and 489,211.40

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Solution

The fourth proportional to 494,460.20, 741,690.30 and 489,211.40 is: 733,817.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,460.20 : 741,690.30 = 489,211.40 : x
  2. Step 2: Convert to fraction form
    494,460.20/741,690.30 = 489,211.40/x
  3. Step 3: Cross multiply
    494,460.20x = 741,690.30 × 489,211.40
  4. Step 4: Simplify right side
    494,460.20x = 362,843,350,029.42
  5. Step 5: Solve for x
    x = 362,843,350,029.42/494,460.20
  6. Step 6: Final answer
    x = 733,817.10

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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.