Home / 728,760.44-1,005,684.56-402,090.28

Finding the Fourth Proportional to 728,760.44, 1,005,684.56 and 402,090.28

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Solution

The fourth proportional to 728,760.44, 1,005,684.56 and 402,090.28 is: 554,881.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,760.44 : 1,005,684.56 = 402,090.28 : x
  2. Step 2: Convert to fraction form
    728,760.44/1,005,684.56 = 402,090.28/x
  3. Step 3: Cross multiply
    728,760.44x = 1,005,684.56 × 402,090.28
  4. Step 4: Simplify right side
    728,760.44x = 404,375,983,305.25
  5. Step 5: Solve for x
    x = 404,375,983,305.25/728,760.44
  6. Step 6: Final answer
    x = 554,881.91

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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.