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Finding the Fourth Proportional to 396,322.94, 543,562.84 and 380,047.41

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Solution

The fourth proportional to 396,322.94, 543,562.84 and 380,047.41 is: 521,240.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,322.94 : 543,562.84 = 380,047.41 : x
  2. Step 2: Convert to fraction form
    396,322.94/543,562.84 = 380,047.41/x
  3. Step 3: Cross multiply
    396,322.94x = 543,562.84 × 380,047.41
  4. Step 4: Simplify right side
    396,322.94x = 206,579,649,514.24
  5. Step 5: Solve for x
    x = 206,579,649,514.24/396,322.94
  6. Step 6: Final answer
    x = 521,240.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.