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Finding the Fourth Proportional to 505,394.34, 758,995.06 and 485,076.22

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Solution

The fourth proportional to 505,394.34, 758,995.06 and 485,076.22 is: 728,481.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,394.34 : 758,995.06 = 485,076.22 : x
  2. Step 2: Convert to fraction form
    505,394.34/758,995.06 = 485,076.22/x
  3. Step 3: Cross multiply
    505,394.34x = 758,995.06 × 485,076.22
  4. Step 4: Simplify right side
    505,394.34x = 368,170,454,703.47
  5. Step 5: Solve for x
    x = 368,170,454,703.47/505,394.34
  6. Step 6: Final answer
    x = 728,481.56

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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.