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Finding the Fourth Proportional to 396,675.60, 595,596.60 and 278,869.20

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Solution

The fourth proportional to 396,675.60, 595,596.60 and 278,869.20 is: 418,713.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,675.60 : 595,596.60 = 278,869.20 : x
  2. Step 2: Convert to fraction form
    396,675.60/595,596.60 = 278,869.20/x
  3. Step 3: Cross multiply
    396,675.60x = 595,596.60 × 278,869.20
  4. Step 4: Simplify right side
    396,675.60x = 166,093,547,364.72
  5. Step 5: Solve for x
    x = 166,093,547,364.72/396,675.60
  6. Step 6: Final answer
    x = 418,713.80

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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.