Home / 1,188,891-1,782,962.15-389,986.92

Finding the Fourth Proportional to 1,188,891, 1,782,962.15 and 389,986.92

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Solution

The fourth proportional to 1,188,891, 1,782,962.15 and 389,986.92 is: 584,857.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,891 : 1,782,962.15 = 389,986.92 : x
  2. Step 2: Convert to fraction form
    1,188,891/1,782,962.15 = 389,986.92/x
  3. Step 3: Cross multiply
    1,188,891x = 1,782,962.15 × 389,986.92
  4. Step 4: Simplify right side
    1,188,891x = 695,331,915,405.14
  5. Step 5: Solve for x
    x = 695,331,915,405.14/1,188,891
  6. Step 6: Final answer
    x = 584,857.58

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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.