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Finding the Fourth Proportional to 396,005.40, 594,002.70 and 129,774.60

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Solution

The fourth proportional to 396,005.40, 594,002.70 and 129,774.60 is: 194,660.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,005.40 : 594,002.70 = 129,774.60 : x
  2. Step 2: Convert to fraction form
    396,005.40/594,002.70 = 129,774.60/x
  3. Step 3: Cross multiply
    396,005.40x = 594,002.70 × 129,774.60
  4. Step 4: Simplify right side
    396,005.40x = 77,086,462,791.42
  5. Step 5: Solve for x
    x = 77,086,462,791.42/396,005.40
  6. Step 6: Final answer
    x = 194,660.13

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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.