Home / 856,067.15-1,284,156.09-287,425.28

Finding the Fourth Proportional to 856,067.15, 1,284,156.09 and 287,425.28

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Solution

The fourth proportional to 856,067.15, 1,284,156.09 and 287,425.28 is: 431,156.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,067.15 : 1,284,156.09 = 287,425.28 : x
  2. Step 2: Convert to fraction form
    856,067.15/1,284,156.09 = 287,425.28/x
  3. Step 3: Cross multiply
    856,067.15x = 1,284,156.09 × 287,425.28
  4. Step 4: Simplify right side
    856,067.15x = 369,098,926,942.35
  5. Step 5: Solve for x
    x = 369,098,926,942.35/856,067.15
  6. Step 6: Final answer
    x = 431,156.51

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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.