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Finding the Fourth Proportional to 722,096.20, 996,523.90 and 399,806.32

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Solution

The fourth proportional to 722,096.20, 996,523.90 and 399,806.32 is: 551,749.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,096.20 : 996,523.90 = 399,806.32 : x
  2. Step 2: Convert to fraction form
    722,096.20/996,523.90 = 399,806.32/x
  3. Step 3: Cross multiply
    722,096.20x = 996,523.90 × 399,806.32
  4. Step 4: Simplify right side
    722,096.20x = 398,416,553,251.05
  5. Step 5: Solve for x
    x = 398,416,553,251.05/722,096.20
  6. Step 6: Final answer
    x = 551,749.97

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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.