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Finding the Fourth Proportional to 436,033.26, 655,308.78 and 405,761.09

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Solution

The fourth proportional to 436,033.26, 655,308.78 and 405,761.09 is: 609,813.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,033.26 : 655,308.78 = 405,761.09 : x
  2. Step 2: Convert to fraction form
    436,033.26/655,308.78 = 405,761.09/x
  3. Step 3: Cross multiply
    436,033.26x = 655,308.78 × 405,761.09
  4. Step 4: Simplify right side
    436,033.26x = 265,898,801,582.83
  5. Step 5: Solve for x
    x = 265,898,801,582.83/436,033.26
  6. Step 6: Final answer
    x = 609,813.12

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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.