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Finding the Fourth Proportional to 576,538.64, 861,022.72 and 491,391.44

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Solution

The fourth proportional to 576,538.64, 861,022.72 and 491,391.44 is: 733,860.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,538.64 : 861,022.72 = 491,391.44 : x
  2. Step 2: Convert to fraction form
    576,538.64/861,022.72 = 491,391.44/x
  3. Step 3: Cross multiply
    576,538.64x = 861,022.72 × 491,391.44
  4. Step 4: Simplify right side
    576,538.64x = 423,099,194,253.52
  5. Step 5: Solve for x
    x = 423,099,194,253.52/576,538.64
  6. Step 6: Final answer
    x = 733,860.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.