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Finding the Fourth Proportional to 668,755.76, 1,002,361.13 and 308,172.65

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Solution

The fourth proportional to 668,755.76, 1,002,361.13 and 308,172.65 is: 461,902.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,755.76 : 1,002,361.13 = 308,172.65 : x
  2. Step 2: Convert to fraction form
    668,755.76/1,002,361.13 = 308,172.65/x
  3. Step 3: Cross multiply
    668,755.76x = 1,002,361.13 × 308,172.65
  4. Step 4: Simplify right side
    668,755.76x = 308,900,284,148.23
  5. Step 5: Solve for x
    x = 308,900,284,148.23/668,755.76
  6. Step 6: Final answer
    x = 461,902.99

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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.