Home / 783,540.24-1,079,769.60-528,448.56

Finding the Fourth Proportional to 783,540.24, 1,079,769.60 and 528,448.56

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Solution

The fourth proportional to 783,540.24, 1,079,769.60 and 528,448.56 is: 728,236.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,540.24 : 1,079,769.60 = 528,448.56 : x
  2. Step 2: Convert to fraction form
    783,540.24/1,079,769.60 = 528,448.56/x
  3. Step 3: Cross multiply
    783,540.24x = 1,079,769.60 × 528,448.56
  4. Step 4: Simplify right side
    783,540.24x = 570,602,690,251.78
  5. Step 5: Solve for x
    x = 570,602,690,251.78/783,540.24
  6. Step 6: Final answer
    x = 728,236.61

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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.