Home / 856,959.35-1,285,180.22-257,761.44

Finding the Fourth Proportional to 856,959.35, 1,285,180.22 and 257,761.44

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Solution

The fourth proportional to 856,959.35, 1,285,180.22 and 257,761.44 is: 386,564.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,959.35 : 1,285,180.22 = 257,761.44 : x
  2. Step 2: Convert to fraction form
    856,959.35/1,285,180.22 = 257,761.44/x
  3. Step 3: Cross multiply
    856,959.35x = 1,285,180.22 × 257,761.44
  4. Step 4: Simplify right side
    856,959.35x = 331,269,904,811.12
  5. Step 5: Solve for x
    x = 331,269,904,811.12/856,959.35
  6. Step 6: Final answer
    x = 386,564.32

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1.5x scale

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.