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Finding the Fourth Proportional to 396,329.70, 594,494.55 and 389,768.70

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Solution

The fourth proportional to 396,329.70, 594,494.55 and 389,768.70 is: 584,653.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,329.70 : 594,494.55 = 389,768.70 : x
  2. Step 2: Convert to fraction form
    396,329.70/594,494.55 = 389,768.70/x
  3. Step 3: Cross multiply
    396,329.70x = 594,494.55 × 389,768.70
  4. Step 4: Simplify right side
    396,329.70x = 231,715,367,910.59
  5. Step 5: Solve for x
    x = 231,715,367,910.59/396,329.70
  6. Step 6: Final answer
    x = 584,653.05

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Similar ratio
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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.