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Finding the Fourth Proportional to 787,067.72, 1,086,148.44 and 447,536

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Solution

The fourth proportional to 787,067.72, 1,086,148.44 and 447,536 is: 617,596.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,067.72 : 1,086,148.44 = 447,536 : x
  2. Step 2: Convert to fraction form
    787,067.72/1,086,148.44 = 447,536/x
  3. Step 3: Cross multiply
    787,067.72x = 1,086,148.44 × 447,536
  4. Step 4: Simplify right side
    787,067.72x = 486,090,528,243.84
  5. Step 5: Solve for x
    x = 486,090,528,243.84/787,067.72
  6. Step 6: Final answer
    x = 617,596.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.