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Finding the Fourth Proportional to 722,096.70, 996,524.58 and 399,806.78

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Solution

The fourth proportional to 722,096.70, 996,524.58 and 399,806.78 is: 551,750.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,096.70 : 996,524.58 = 399,806.78 : x
  2. Step 2: Convert to fraction form
    722,096.70/996,524.58 = 399,806.78/x
  3. Step 3: Cross multiply
    722,096.70x = 996,524.58 × 399,806.78
  4. Step 4: Simplify right side
    722,096.70x = 398,417,283,520.65
  5. Step 5: Solve for x
    x = 398,417,283,520.65/722,096.70
  6. Step 6: Final answer
    x = 551,750.59

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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.