Home / 1,218,879.51-1,682,333.67-810,998.55

Finding the Fourth Proportional to 1,218,879.51, 1,682,333.67 and 810,998.55

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Solution

The fourth proportional to 1,218,879.51, 1,682,333.67 and 810,998.55 is: 1,119,364.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,879.51 : 1,682,333.67 = 810,998.55 : x
  2. Step 2: Convert to fraction form
    1,218,879.51/1,682,333.67 = 810,998.55/x
  3. Step 3: Cross multiply
    1,218,879.51x = 1,682,333.67 × 810,998.55
  4. Step 4: Simplify right side
    1,218,879.51x = 1,364,370,166,986.18
  5. Step 5: Solve for x
    x = 1,364,370,166,986.18/1,218,879.51
  6. Step 6: Final answer
    x = 1,119,364.27

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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.