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Finding the Fourth Proportional to 655,877.16, 981,593.57 and 403,317.61

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Solution

The fourth proportional to 655,877.16, 981,593.57 and 403,317.61 is: 603,609.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,877.16 : 981,593.57 = 403,317.61 : x
  2. Step 2: Convert to fraction form
    655,877.16/981,593.57 = 403,317.61/x
  3. Step 3: Cross multiply
    655,877.16x = 981,593.57 × 403,317.61
  4. Step 4: Simplify right side
    655,877.16x = 395,893,971,198.08
  5. Step 5: Solve for x
    x = 395,893,971,198.08/655,877.16
  6. Step 6: Final answer
    x = 603,609.94

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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.