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Finding the Fourth Proportional to 492,190.80, 738,286.20 and 489,080.40

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Solution

The fourth proportional to 492,190.80, 738,286.20 and 489,080.40 is: 733,620.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,190.80 : 738,286.20 = 489,080.40 : x
  2. Step 2: Convert to fraction form
    492,190.80/738,286.20 = 489,080.40/x
  3. Step 3: Cross multiply
    492,190.80x = 738,286.20 × 489,080.40
  4. Step 4: Simplify right side
    492,190.80x = 361,081,310,010.48
  5. Step 5: Solve for x
    x = 361,081,310,010.48/492,190.80
  6. Step 6: Final answer
    x = 733,620.60

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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.