Home / 1,238,998.26-1,709,920.65-687,765.85

Finding the Fourth Proportional to 1,238,998.26, 1,709,920.65 and 687,765.85

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Solution

The fourth proportional to 1,238,998.26, 1,709,920.65 and 687,765.85 is: 949,174.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,998.26 : 1,709,920.65 = 687,765.85 : x
  2. Step 2: Convert to fraction form
    1,238,998.26/1,709,920.65 = 687,765.85/x
  3. Step 3: Cross multiply
    1,238,998.26x = 1,709,920.65 × 687,765.85
  4. Step 4: Simplify right side
    1,238,998.26x = 1,176,025,027,584.12
  5. Step 5: Solve for x
    x = 1,176,025,027,584.12/1,238,998.26
  6. Step 6: Final answer
    x = 949,174.08

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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.