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Finding the Fourth Proportional to 638,229.35, 880,745.10 and 347,843.54

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Solution

The fourth proportional to 638,229.35, 880,745.10 and 347,843.54 is: 480,017.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,229.35 : 880,745.10 = 347,843.54 : x
  2. Step 2: Convert to fraction form
    638,229.35/880,745.10 = 347,843.54/x
  3. Step 3: Cross multiply
    638,229.35x = 880,745.10 × 347,843.54
  4. Step 4: Simplify right side
    638,229.35x = 306,361,493,421.65
  5. Step 5: Solve for x
    x = 306,361,493,421.65/638,229.35
  6. Step 6: Final answer
    x = 480,017.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.