Home / 1,381,378.38-1,905,796.50-837,121.56

Finding the Fourth Proportional to 1,381,378.38, 1,905,796.50 and 837,121.56

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Solution

The fourth proportional to 1,381,378.38, 1,905,796.50 and 837,121.56 is: 1,154,921.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,381,378.38 : 1,905,796.50 = 837,121.56 : x
  2. Step 2: Convert to fraction form
    1,381,378.38/1,905,796.50 = 837,121.56/x
  3. Step 3: Cross multiply
    1,381,378.38x = 1,905,796.50 × 837,121.56
  4. Step 4: Simplify right side
    1,381,378.38x = 1,595,383,339,122.54
  5. Step 5: Solve for x
    x = 1,595,383,339,122.54/1,381,378.38
  6. Step 6: Final answer
    x = 1,154,921.32

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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.