Home / 685,158.75-945,521.17-379,256.38

Finding the Fourth Proportional to 685,158.75, 945,521.17 and 379,256.38

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Solution

The fourth proportional to 685,158.75, 945,521.17 and 379,256.38 is: 523,374.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,158.75 : 945,521.17 = 379,256.38 : x
  2. Step 2: Convert to fraction form
    685,158.75/945,521.17 = 379,256.38/x
  3. Step 3: Cross multiply
    685,158.75x = 945,521.17 × 379,256.38
  4. Step 4: Simplify right side
    685,158.75x = 358,594,932,835.62
  5. Step 5: Solve for x
    x = 358,594,932,835.62/685,158.75
  6. Step 6: Final answer
    x = 523,374.96

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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.