Home / 1,120,823.44-1,682,378.80-820,411.68

Finding the Fourth Proportional to 1,120,823.44, 1,682,378.80 and 820,411.68

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Solution

The fourth proportional to 1,120,823.44, 1,682,378.80 and 820,411.68 is: 1,231,454.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,823.44 : 1,682,378.80 = 820,411.68 : x
  2. Step 2: Convert to fraction form
    1,120,823.44/1,682,378.80 = 820,411.68/x
  3. Step 3: Cross multiply
    1,120,823.44x = 1,682,378.80 × 820,411.68
  4. Step 4: Simplify right side
    1,120,823.44x = 1,380,243,217,704.38
  5. Step 5: Solve for x
    x = 1,380,243,217,704.38/1,120,823.44
  6. Step 6: Final answer
    x = 1,231,454.63

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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.