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Finding the Fourth Proportional to 384,774.20, 576,505.20 and 328,349.60

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Solution

The fourth proportional to 384,774.20, 576,505.20 and 328,349.60 is: 491,964.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,774.20 : 576,505.20 = 328,349.60 : x
  2. Step 2: Convert to fraction form
    384,774.20/576,505.20 = 328,349.60/x
  3. Step 3: Cross multiply
    384,774.20x = 576,505.20 × 328,349.60
  4. Step 4: Simplify right side
    384,774.20x = 189,295,251,817.92
  5. Step 5: Solve for x
    x = 189,295,251,817.92/384,774.20
  6. Step 6: Final answer
    x = 491,964.51

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1.5x scale

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.