Home / 1,222,120.60-1,686,544.62-678,291.44

Finding the Fourth Proportional to 1,222,120.60, 1,686,544.62 and 678,291.44

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Solution

The fourth proportional to 1,222,120.60, 1,686,544.62 and 678,291.44 is: 936,052.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,120.60 : 1,686,544.62 = 678,291.44 : x
  2. Step 2: Convert to fraction form
    1,222,120.60/1,686,544.62 = 678,291.44/x
  3. Step 3: Cross multiply
    1,222,120.60x = 1,686,544.62 × 678,291.44
  4. Step 4: Simplify right side
    1,222,120.60x = 1,143,968,778,924.05
  5. Step 5: Solve for x
    x = 1,143,968,778,924.05/1,222,120.60
  6. Step 6: Final answer
    x = 936,052.28

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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.