Home / 691,143.80-1,036,645.62-185,639.11

Finding the Fourth Proportional to 691,143.80, 1,036,645.62 and 185,639.11

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Solution

The fourth proportional to 691,143.80, 1,036,645.62 and 185,639.11 is: 278,439.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,143.80 : 1,036,645.62 = 185,639.11 : x
  2. Step 2: Convert to fraction form
    691,143.80/1,036,645.62 = 185,639.11/x
  3. Step 3: Cross multiply
    691,143.80x = 1,036,645.62 × 185,639.11
  4. Step 4: Simplify right side
    691,143.80x = 192,441,970,282.20
  5. Step 5: Solve for x
    x = 192,441,970,282.20/691,143.80
  6. Step 6: Final answer
    x = 278,439.84

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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.