Home / 1,286,278.52-1,774,936.33-742,589.78

Finding the Fourth Proportional to 1,286,278.52, 1,774,936.33 and 742,589.78

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Solution

The fourth proportional to 1,286,278.52, 1,774,936.33 and 742,589.78 is: 1,024,699.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,278.52 : 1,774,936.33 = 742,589.78 : x
  2. Step 2: Convert to fraction form
    1,286,278.52/1,774,936.33 = 742,589.78/x
  3. Step 3: Cross multiply
    1,286,278.52x = 1,774,936.33 × 742,589.78
  4. Step 4: Simplify right side
    1,286,278.52x = 1,318,049,568,077.55
  5. Step 5: Solve for x
    x = 1,318,049,568,077.55/1,286,278.52
  6. Step 6: Final answer
    x = 1,024,699.98

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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.