Home / 861,356.60-1,188,660.26-479,383.32

Finding the Fourth Proportional to 861,356.60, 1,188,660.26 and 479,383.32

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Solution

The fourth proportional to 861,356.60, 1,188,660.26 and 479,383.32 is: 661,542.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,356.60 : 1,188,660.26 = 479,383.32 : x
  2. Step 2: Convert to fraction form
    861,356.60/1,188,660.26 = 479,383.32/x
  3. Step 3: Cross multiply
    861,356.60x = 1,188,660.26 × 479,383.32
  4. Step 4: Simplify right side
    861,356.60x = 569,823,901,790.86
  5. Step 5: Solve for x
    x = 569,823,901,790.86/861,356.60
  6. Step 6: Final answer
    x = 661,542.39

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1.5x scale

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.