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Finding the Fourth Proportional to 384,768.20, 576,496.20 and 328,343.60

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Solution

The fourth proportional to 384,768.20, 576,496.20 and 328,343.60 is: 491,955.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,768.20 : 576,496.20 = 328,343.60 : x
  2. Step 2: Convert to fraction form
    384,768.20/576,496.20 = 328,343.60/x
  3. Step 3: Cross multiply
    384,768.20x = 576,496.20 × 328,343.60
  4. Step 4: Simplify right side
    384,768.20x = 189,288,837,694.32
  5. Step 5: Solve for x
    x = 189,288,837,694.32/384,768.20
  6. Step 6: Final answer
    x = 491,955.51

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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.