Home / 685,102.05-945,421.27-379,190.97

Finding the Fourth Proportional to 685,102.05, 945,421.27 and 379,190.97

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Solution

The fourth proportional to 685,102.05, 945,421.27 and 379,190.97 is: 523,272.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,102.05 : 945,421.27 = 379,190.97 : x
  2. Step 2: Convert to fraction form
    685,102.05/945,421.27 = 379,190.97/x
  3. Step 3: Cross multiply
    685,102.05x = 945,421.27 × 379,190.97
  4. Step 4: Simplify right side
    685,102.05x = 358,495,207,481.95
  5. Step 5: Solve for x
    x = 358,495,207,481.95/685,102.05
  6. Step 6: Final answer
    x = 523,272.71

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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.