Home / 856,511.56-1,284,885.28-287,936.76

Finding the Fourth Proportional to 856,511.56, 1,284,885.28 and 287,936.76

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Solution

The fourth proportional to 856,511.56, 1,284,885.28 and 287,936.76 is: 431,944.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,511.56 : 1,284,885.28 = 287,936.76 : x
  2. Step 2: Convert to fraction form
    856,511.56/1,284,885.28 = 287,936.76/x
  3. Step 3: Cross multiply
    856,511.56x = 1,284,885.28 × 287,936.76
  4. Step 4: Simplify right side
    856,511.56x = 369,965,704,494.89
  5. Step 5: Solve for x
    x = 369,965,704,494.89/856,511.56
  6. Step 6: Final answer
    x = 431,944.79

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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.