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Finding the Fourth Proportional to 488,960.40, 733,440.60 and 320,998.80

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Solution

The fourth proportional to 488,960.40, 733,440.60 and 320,998.80 is: 481,498.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,960.40 : 733,440.60 = 320,998.80 : x
  2. Step 2: Convert to fraction form
    488,960.40/733,440.60 = 320,998.80/x
  3. Step 3: Cross multiply
    488,960.40x = 733,440.60 × 320,998.80
  4. Step 4: Simplify right side
    488,960.40x = 235,433,552,471.28
  5. Step 5: Solve for x
    x = 235,433,552,471.28/488,960.40
  6. Step 6: Final answer
    x = 481,498.20

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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.