Home / 685,131.44-945,402.48-394,785.32

Finding the Fourth Proportional to 685,131.44, 945,402.48 and 394,785.32

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Solution

The fourth proportional to 685,131.44, 945,402.48 and 394,785.32 is: 544,758.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,131.44 : 945,402.48 = 394,785.32 : x
  2. Step 2: Convert to fraction form
    685,131.44/945,402.48 = 394,785.32/x
  3. Step 3: Cross multiply
    685,131.44x = 945,402.48 × 394,785.32
  4. Step 4: Simplify right side
    685,131.44x = 373,231,020,595.59
  5. Step 5: Solve for x
    x = 373,231,020,595.59/685,131.44
  6. Step 6: Final answer
    x = 544,758.27

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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.