Home / 1,280,936.70-1,921,374.42-416,370.54

Finding the Fourth Proportional to 1,280,936.70, 1,921,374.42 and 416,370.54

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Solution

The fourth proportional to 1,280,936.70, 1,921,374.42 and 416,370.54 is: 624,545.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,936.70 : 1,921,374.42 = 416,370.54 : x
  2. Step 2: Convert to fraction form
    1,280,936.70/1,921,374.42 = 416,370.54/x
  3. Step 3: Cross multiply
    1,280,936.70x = 1,921,374.42 × 416,370.54
  4. Step 4: Simplify right side
    1,280,936.70x = 800,003,704,797.59
  5. Step 5: Solve for x
    x = 800,003,704,797.59/1,280,936.70
  6. Step 6: Final answer
    x = 624,545.85

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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.