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Finding the Fourth Proportional to 663,189.69, 994,687.38 and 326,139.75

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Solution

The fourth proportional to 663,189.69, 994,687.38 and 326,139.75 is: 489,161.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,189.69 : 994,687.38 = 326,139.75 : x
  2. Step 2: Convert to fraction form
    663,189.69/994,687.38 = 326,139.75/x
  3. Step 3: Cross multiply
    663,189.69x = 994,687.38 × 326,139.75
  4. Step 4: Simplify right side
    663,189.69x = 324,407,093,441.36
  5. Step 5: Solve for x
    x = 324,407,093,441.36/663,189.69
  6. Step 6: Final answer
    x = 489,161.85

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1.5x scale

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.