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Finding the Fourth Proportional to 492,788.80, 739,183.20 and 442,925.20

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Solution

The fourth proportional to 492,788.80, 739,183.20 and 442,925.20 is: 664,387.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,788.80 : 739,183.20 = 442,925.20 : x
  2. Step 2: Convert to fraction form
    492,788.80/739,183.20 = 442,925.20/x
  3. Step 3: Cross multiply
    492,788.80x = 739,183.20 × 442,925.20
  4. Step 4: Simplify right side
    492,788.80x = 327,402,866,696.64
  5. Step 5: Solve for x
    x = 327,402,866,696.64/492,788.80
  6. Step 6: Final answer
    x = 664,387.80

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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.