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Finding the Fourth Proportional to 396,323.69, 543,563.87 and 380,048.18

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Solution

The fourth proportional to 396,323.69, 543,563.87 and 380,048.18 is: 521,241.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,323.69 : 543,563.87 = 380,048.18 : x
  2. Step 2: Convert to fraction form
    396,323.69/543,563.87 = 380,048.18/x
  3. Step 3: Cross multiply
    396,323.69x = 543,563.87 × 380,048.18
  4. Step 4: Simplify right side
    396,323.69x = 206,580,454,889.20
  5. Step 5: Solve for x
    x = 206,580,454,889.20/396,323.69
  6. Step 6: Final answer
    x = 521,241.76

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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.