Home / 751,219.78-1,036,782.57-428,857.06

Finding the Fourth Proportional to 751,219.78, 1,036,782.57 and 428,857.06

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Solution

The fourth proportional to 751,219.78, 1,036,782.57 and 428,857.06 is: 591,879.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    751,219.78 : 1,036,782.57 = 428,857.06 : x
  2. Step 2: Convert to fraction form
    751,219.78/1,036,782.57 = 428,857.06/x
  3. Step 3: Cross multiply
    751,219.78x = 1,036,782.57 × 428,857.06
  4. Step 4: Simplify right side
    751,219.78x = 444,631,524,829.44
  5. Step 5: Solve for x
    x = 444,631,524,829.44/751,219.78
  6. Step 6: Final answer
    x = 591,879.42

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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.