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Finding the Fourth Proportional to 636,814.14, 954,433.89 and 321,361.26

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Solution

The fourth proportional to 636,814.14, 954,433.89 and 321,361.26 is: 481,644.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,814.14 : 954,433.89 = 321,361.26 : x
  2. Step 2: Convert to fraction form
    636,814.14/954,433.89 = 321,361.26/x
  3. Step 3: Cross multiply
    636,814.14x = 954,433.89 × 321,361.26
  4. Step 4: Simplify right side
    636,814.14x = 306,718,077,477.10
  5. Step 5: Solve for x
    x = 306,718,077,477.10/636,814.14
  6. Step 6: Final answer
    x = 481,644.58

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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.