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Finding the Fourth Proportional to 722,102.44, 996,532.52 and 399,812.54

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Solution

The fourth proportional to 722,102.44, 996,532.52 and 399,812.54 is: 551,758.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,102.44 : 996,532.52 = 399,812.54 : x
  2. Step 2: Convert to fraction form
    722,102.44/996,532.52 = 399,812.54/x
  3. Step 3: Cross multiply
    722,102.44x = 996,532.52 × 399,812.54
  4. Step 4: Simplify right side
    722,102.44x = 398,426,198,013.80
  5. Step 5: Solve for x
    x = 398,426,198,013.80/722,102.44
  6. Step 6: Final answer
    x = 551,758.55

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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.