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Finding the Fourth Proportional to 396,031.60, 594,047.40 and 330,713.20

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Solution

The fourth proportional to 396,031.60, 594,047.40 and 330,713.20 is: 496,069.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,031.60 : 594,047.40 = 330,713.20 : x
  2. Step 2: Convert to fraction form
    396,031.60/594,047.40 = 330,713.20/x
  3. Step 3: Cross multiply
    396,031.60x = 594,047.40 × 330,713.20
  4. Step 4: Simplify right side
    396,031.60x = 196,459,316,605.68
  5. Step 5: Solve for x
    x = 196,459,316,605.68/396,031.60
  6. Step 6: Final answer
    x = 496,069.80

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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.