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Finding the Fourth Proportional to 396,964.80, 595,447.20 and 302,486.40

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Solution

The fourth proportional to 396,964.80, 595,447.20 and 302,486.40 is: 453,729.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,964.80 : 595,447.20 = 302,486.40 : x
  2. Step 2: Convert to fraction form
    396,964.80/595,447.20 = 302,486.40/x
  3. Step 3: Cross multiply
    396,964.80x = 595,447.20 × 302,486.40
  4. Step 4: Simplify right side
    396,964.80x = 180,114,679,918.08
  5. Step 5: Solve for x
    x = 180,114,679,918.08/396,964.80
  6. Step 6: Final answer
    x = 453,729.60

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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.