Home / 856,969.39-1,285,195.20-257,771.44

Finding the Fourth Proportional to 856,969.39, 1,285,195.20 and 257,771.44

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Solution

The fourth proportional to 856,969.39, 1,285,195.20 and 257,771.44 is: 386,579.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,969.39 : 1,285,195.20 = 257,771.44 : x
  2. Step 2: Convert to fraction form
    856,969.39/1,285,195.20 = 257,771.44/x
  3. Step 3: Cross multiply
    856,969.39x = 1,285,195.20 × 257,771.44
  4. Step 4: Simplify right side
    856,969.39x = 331,286,617,385.09
  5. Step 5: Solve for x
    x = 331,286,617,385.09/856,969.39
  6. Step 6: Final answer
    x = 386,579.29

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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.