Home / 1,384,847.68-1,911,408.62-812,072.38

Finding the Fourth Proportional to 1,384,847.68, 1,911,408.62 and 812,072.38

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Solution

The fourth proportional to 1,384,847.68, 1,911,408.62 and 812,072.38 is: 1,120,846.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,384,847.68 : 1,911,408.62 = 812,072.38 : x
  2. Step 2: Convert to fraction form
    1,384,847.68/1,911,408.62 = 812,072.38/x
  3. Step 3: Cross multiply
    1,384,847.68x = 1,911,408.62 × 812,072.38
  4. Step 4: Simplify right side
    1,384,847.68x = 1,552,202,147,195.92
  5. Step 5: Solve for x
    x = 1,552,202,147,195.92/1,384,847.68
  6. Step 6: Final answer
    x = 1,120,846.84

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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.