Home / 485,917.27-729,086.41-261,015.30

Finding the Fourth Proportional to 485,917.27, 729,086.41 and 261,015.30

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Solution

The fourth proportional to 485,917.27, 729,086.41 and 261,015.30 is: 391,636.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,917.27 : 729,086.41 = 261,015.30 : x
  2. Step 2: Convert to fraction form
    485,917.27/729,086.41 = 261,015.30/x
  3. Step 3: Cross multiply
    485,917.27x = 729,086.41 × 261,015.30
  4. Step 4: Simplify right side
    485,917.27x = 190,302,708,032.07
  5. Step 5: Solve for x
    x = 190,302,708,032.07/485,917.27
  6. Step 6: Final answer
    x = 391,636.03

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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.