Home / 685,319.04-945,839.24-394,874.97

Finding the Fourth Proportional to 685,319.04, 945,839.24 and 394,874.97

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Solution

The fourth proportional to 685,319.04, 945,839.24 and 394,874.97 is: 544,984.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,319.04 : 945,839.24 = 394,874.97 : x
  2. Step 2: Convert to fraction form
    685,319.04/945,839.24 = 394,874.97/x
  3. Step 3: Cross multiply
    685,319.04x = 945,839.24 × 394,874.97
  4. Step 4: Simplify right side
    685,319.04x = 373,488,239,545.45
  5. Step 5: Solve for x
    x = 373,488,239,545.45/685,319.04
  6. Step 6: Final answer
    x = 544,984.48

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Double scale
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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.