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Finding the Fourth Proportional to 655,882.21, 981,601.17 and 403,322.66

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Solution

The fourth proportional to 655,882.21, 981,601.17 and 403,322.66 is: 603,617.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,882.21 : 981,601.17 = 403,322.66 : x
  2. Step 2: Convert to fraction form
    655,882.21/981,601.17 = 403,322.66/x
  3. Step 3: Cross multiply
    655,882.21x = 981,601.17 × 403,322.66
  4. Step 4: Simplify right side
    655,882.21x = 395,901,992,204.05
  5. Step 5: Solve for x
    x = 395,901,992,204.05/655,882.21
  6. Step 6: Final answer
    x = 603,617.52

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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.