Home / 638,379.24-880,923.78-351,884.52

Finding the Fourth Proportional to 638,379.24, 880,923.78 and 351,884.52

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Solution

The fourth proportional to 638,379.24, 880,923.78 and 351,884.52 is: 485,578.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,379.24 : 880,923.78 = 351,884.52 : x
  2. Step 2: Convert to fraction form
    638,379.24/880,923.78 = 351,884.52/x
  3. Step 3: Cross multiply
    638,379.24x = 880,923.78 × 351,884.52
  4. Step 4: Simplify right side
    638,379.24x = 309,983,441,481.89
  5. Step 5: Solve for x
    x = 309,983,441,481.89/638,379.24
  6. Step 6: Final answer
    x = 485,578.83

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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.