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Finding the Fourth Proportional to 396,081.60, 594,122.40 and 289,793.40

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Solution

The fourth proportional to 396,081.60, 594,122.40 and 289,793.40 is: 434,690.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,081.60 : 594,122.40 = 289,793.40 : x
  2. Step 2: Convert to fraction form
    396,081.60/594,122.40 = 289,793.40/x
  3. Step 3: Cross multiply
    396,081.60x = 594,122.40 × 289,793.40
  4. Step 4: Simplify right side
    396,081.60x = 172,172,750,312.16
  5. Step 5: Solve for x
    x = 172,172,750,312.16/396,081.60
  6. Step 6: Final answer
    x = 434,690.10

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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.