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Finding the Fourth Proportional to 655,855.71, 981,561.54 and 403,296.18

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Solution

The fourth proportional to 655,855.71, 981,561.54 and 403,296.18 is: 603,577.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,855.71 : 981,561.54 = 403,296.18 : x
  2. Step 2: Convert to fraction form
    655,855.71/981,561.54 = 403,296.18/x
  3. Step 3: Cross multiply
    655,855.71x = 981,561.54 × 403,296.18
  4. Step 4: Simplify right side
    655,855.71x = 395,860,019,516.92
  5. Step 5: Solve for x
    x = 395,860,019,516.92/655,855.71
  6. Step 6: Final answer
    x = 603,577.91

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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.