Home / 685,089.05-945,403.33-379,177.97

Finding the Fourth Proportional to 685,089.05, 945,403.33 and 379,177.97

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Solution

The fourth proportional to 685,089.05, 945,403.33 and 379,177.97 is: 523,254.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,089.05 : 945,403.33 = 379,177.97 : x
  2. Step 2: Convert to fraction form
    685,089.05/945,403.33 = 379,177.97/x
  3. Step 3: Cross multiply
    685,089.05x = 945,403.33 × 379,177.97
  4. Step 4: Simplify right side
    685,089.05x = 358,476,113,604.75
  5. Step 5: Solve for x
    x = 358,476,113,604.75/685,089.05
  6. Step 6: Final answer
    x = 523,254.77

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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.