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Finding the Fourth Proportional to 655,855.97, 981,561.92 and 403,296.44

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Solution

The fourth proportional to 655,855.97, 981,561.92 and 403,296.44 is: 603,578.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,855.97 : 981,561.92 = 403,296.44 : x
  2. Step 2: Convert to fraction form
    655,855.97/981,561.92 = 403,296.44/x
  3. Step 3: Cross multiply
    655,855.97x = 981,561.92 × 403,296.44
  4. Step 4: Simplify right side
    655,855.97x = 395,860,421,051.27
  5. Step 5: Solve for x
    x = 395,860,421,051.27/655,855.97
  6. Step 6: Final answer
    x = 603,578.29

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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.