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Finding the Fourth Proportional to 644,951.20, 967,426.80 and 326,086.60

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Solution

The fourth proportional to 644,951.20, 967,426.80 and 326,086.60 is: 489,129.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,951.20 : 967,426.80 = 326,086.60 : x
  2. Step 2: Convert to fraction form
    644,951.20/967,426.80 = 326,086.60/x
  3. Step 3: Cross multiply
    644,951.20x = 967,426.80 × 326,086.60
  4. Step 4: Simplify right side
    644,951.20x = 315,464,915,960.88
  5. Step 5: Solve for x
    x = 315,464,915,960.88/644,951.20
  6. Step 6: Final answer
    x = 489,129.90

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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.