Home / 657,111.78-985,789.17-207,945.72

Finding the Fourth Proportional to 657,111.78, 985,789.17 and 207,945.72

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Solution

The fourth proportional to 657,111.78, 985,789.17 and 207,945.72 is: 311,957.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,111.78 : 985,789.17 = 207,945.72 : x
  2. Step 2: Convert to fraction form
    657,111.78/985,789.17 = 207,945.72/x
  3. Step 3: Cross multiply
    657,111.78x = 985,789.17 × 207,945.72
  4. Step 4: Simplify right side
    657,111.78x = 204,990,638,723.85
  5. Step 5: Solve for x
    x = 204,990,638,723.85/657,111.78
  6. Step 6: Final answer
    x = 311,957.03

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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.