Home / 685,205.40-945,552.78-379,293.24

Finding the Fourth Proportional to 685,205.40, 945,552.78 and 379,293.24

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Solution

The fourth proportional to 685,205.40, 945,552.78 and 379,293.24 is: 523,407.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,205.40 : 945,552.78 = 379,293.24 : x
  2. Step 2: Convert to fraction form
    685,205.40/945,552.78 = 379,293.24/x
  3. Step 3: Cross multiply
    685,205.40x = 945,552.78 × 379,293.24
  4. Step 4: Simplify right side
    685,205.40x = 358,641,777,517.21
  5. Step 5: Solve for x
    x = 358,641,777,517.21/685,205.40
  6. Step 6: Final answer
    x = 523,407.69

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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.