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Finding the Fourth Proportional to 445,497.90, 668,817.09 and 382,719.66

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Solution

The fourth proportional to 445,497.90, 668,817.09 and 382,719.66 is: 574,569.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,497.90 : 668,817.09 = 382,719.66 : x
  2. Step 2: Convert to fraction form
    445,497.90/668,817.09 = 382,719.66/x
  3. Step 3: Cross multiply
    445,497.90x = 668,817.09 × 382,719.66
  4. Step 4: Simplify right side
    445,497.90x = 255,969,449,286.99
  5. Step 5: Solve for x
    x = 255,969,449,286.99/445,497.90
  6. Step 6: Final answer
    x = 574,569.37

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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.