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Finding the Fourth Proportional to 655,855.08, 981,560.60 and 403,295.54

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Solution

The fourth proportional to 655,855.08, 981,560.60 and 403,295.54 is: 603,576.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,855.08 : 981,560.60 = 403,295.54 : x
  2. Step 2: Convert to fraction form
    655,855.08/981,560.60 = 403,295.54/x
  3. Step 3: Cross multiply
    655,855.08x = 981,560.60 × 403,295.54
  4. Step 4: Simplify right side
    655,855.08x = 395,859,012,219.72
  5. Step 5: Solve for x
    x = 395,859,012,219.72/655,855.08
  6. Step 6: Final answer
    x = 603,576.96

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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.