Home / 1,222,643.44-1,687,302.42-678,786.66

Finding the Fourth Proportional to 1,222,643.44, 1,687,302.42 and 678,786.66

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Solution

The fourth proportional to 1,222,643.44, 1,687,302.42 and 678,786.66 is: 936,755.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,643.44 : 1,687,302.42 = 678,786.66 : x
  2. Step 2: Convert to fraction form
    1,222,643.44/1,687,302.42 = 678,786.66/x
  3. Step 3: Cross multiply
    1,222,643.44x = 1,687,302.42 × 678,786.66
  4. Step 4: Simplify right side
    1,222,643.44x = 1,145,318,374,081.72
  5. Step 5: Solve for x
    x = 1,145,318,374,081.72/1,222,643.44
  6. Step 6: Final answer
    x = 936,755.83

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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.