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Finding the Fourth Proportional to 641,633.16, 961,908.39 and 404,453.01

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Solution

The fourth proportional to 641,633.16, 961,908.39 and 404,453.01 is: 606,338.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,633.16 : 961,908.39 = 404,453.01 : x
  2. Step 2: Convert to fraction form
    641,633.16/961,908.39 = 404,453.01/x
  3. Step 3: Cross multiply
    641,633.16x = 961,908.39 × 404,453.01
  4. Step 4: Simplify right side
    641,633.16x = 389,046,743,679.75
  5. Step 5: Solve for x
    x = 389,046,743,679.75/641,633.16
  6. Step 6: Final answer
    x = 606,338.28

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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.