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Finding the Fourth Proportional to 641,450.21, 961,407.47 and 299,433.47

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Solution

The fourth proportional to 641,450.21, 961,407.47 and 299,433.47 is: 448,791.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,450.21 : 961,407.47 = 299,433.47 : x
  2. Step 2: Convert to fraction form
    641,450.21/961,407.47 = 299,433.47/x
  3. Step 3: Cross multiply
    641,450.21x = 961,407.47 × 299,433.47
  4. Step 4: Simplify right side
    641,450.21x = 287,877,575,732.37
  5. Step 5: Solve for x
    x = 287,877,575,732.37/641,450.21
  6. Step 6: Final answer
    x = 448,791.77

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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.