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Finding the Fourth Proportional to 450,021.20, 675,204.60 and 442,936.40

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Solution

The fourth proportional to 450,021.20, 675,204.60 and 442,936.40 is: 664,574.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,021.20 : 675,204.60 = 442,936.40 : x
  2. Step 2: Convert to fraction form
    450,021.20/675,204.60 = 442,936.40/x
  3. Step 3: Cross multiply
    450,021.20x = 675,204.60 × 442,936.40
  4. Step 4: Simplify right side
    450,021.20x = 299,072,694,787.44
  5. Step 5: Solve for x
    x = 299,072,694,787.44/450,021.20
  6. Step 6: Final answer
    x = 664,574.68

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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.