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Finding the Fourth Proportional to 722,102.58, 996,532.70 and 399,812.69

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Solution

The fourth proportional to 722,102.58, 996,532.70 and 399,812.69 is: 551,758.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,102.58 : 996,532.70 = 399,812.69 : x
  2. Step 2: Convert to fraction form
    722,102.58/996,532.70 = 399,812.69/x
  3. Step 3: Cross multiply
    722,102.58x = 996,532.70 × 399,812.69
  4. Step 4: Simplify right side
    722,102.58x = 398,426,419,952.23
  5. Step 5: Solve for x
    x = 398,426,419,952.23/722,102.58
  6. Step 6: Final answer
    x = 551,758.75

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.