Home / 728,893.44-1,091,940.48-428,739.84

Finding the Fourth Proportional to 728,893.44, 1,091,940.48 and 428,739.84

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Solution

The fourth proportional to 728,893.44, 1,091,940.48 and 428,739.84 is: 642,286.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,893.44 : 1,091,940.48 = 428,739.84 : x
  2. Step 2: Convert to fraction form
    728,893.44/1,091,940.48 = 428,739.84/x
  3. Step 3: Cross multiply
    728,893.44x = 1,091,940.48 × 428,739.84
  4. Step 4: Simplify right side
    728,893.44x = 468,158,386,684.72
  5. Step 5: Solve for x
    x = 468,158,386,684.72/728,893.44
  6. Step 6: Final answer
    x = 642,286.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.