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Finding the Fourth Proportional to 396,334.20, 594,501.30 and 389,773.20

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Solution

The fourth proportional to 396,334.20, 594,501.30 and 389,773.20 is: 584,659.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,334.20 : 594,501.30 = 389,773.20 : x
  2. Step 2: Convert to fraction form
    396,334.20/594,501.30 = 389,773.20/x
  3. Step 3: Cross multiply
    396,334.20x = 594,501.30 × 389,773.20
  4. Step 4: Simplify right side
    396,334.20x = 231,720,674,105.16
  5. Step 5: Solve for x
    x = 231,720,674,105.16/396,334.20
  6. Step 6: Final answer
    x = 584,659.80

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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.