Home / 685,441.90-945,917.36-379,523.66

Finding the Fourth Proportional to 685,441.90, 945,917.36 and 379,523.66

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Solution

The fourth proportional to 685,441.90, 945,917.36 and 379,523.66 is: 523,746.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,441.90 : 945,917.36 = 379,523.66 : x
  2. Step 2: Convert to fraction form
    685,441.90/945,917.36 = 379,523.66/x
  3. Step 3: Cross multiply
    685,441.90x = 945,917.36 × 379,523.66
  4. Step 4: Simplify right side
    685,441.90x = 358,998,013,320.75
  5. Step 5: Solve for x
    x = 358,998,013,320.75/685,441.90
  6. Step 6: Final answer
    x = 523,746.82

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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.