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Finding the Fourth Proportional to 451,039.67, 675,839.84 and 330,538.20

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Solution

The fourth proportional to 451,039.67, 675,839.84 and 330,538.20 is: 495,279.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,039.67 : 675,839.84 = 330,538.20 : x
  2. Step 2: Convert to fraction form
    451,039.67/675,839.84 = 330,538.20/x
  3. Step 3: Cross multiply
    451,039.67x = 675,839.84 × 330,538.20
  4. Step 4: Simplify right side
    451,039.67x = 223,390,880,014.80
  5. Step 5: Solve for x
    x = 223,390,880,014.80/451,039.67
  6. Step 6: Final answer
    x = 495,279.90

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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.