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Finding the Fourth Proportional to 646,608.46, 969,912.71 and 197,331.64

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Solution

The fourth proportional to 646,608.46, 969,912.71 and 197,331.64 is: 295,997.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,608.46 : 969,912.71 = 197,331.64 : x
  2. Step 2: Convert to fraction form
    646,608.46/969,912.71 = 197,331.64/x
  3. Step 3: Cross multiply
    646,608.46x = 969,912.71 × 197,331.64
  4. Step 4: Simplify right side
    646,608.46x = 191,394,465,721.14
  5. Step 5: Solve for x
    x = 191,394,465,721.14/646,608.46
  6. Step 6: Final answer
    x = 295,997.47

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.