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Finding the Fourth Proportional to 655,885.40, 981,604.16 and 403,324.56

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Solution

The fourth proportional to 655,885.40, 981,604.16 and 403,324.56 is: 603,619.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,885.40 : 981,604.16 = 403,324.56 : x
  2. Step 2: Convert to fraction form
    655,885.40/981,604.16 = 403,324.56/x
  3. Step 3: Cross multiply
    655,885.40x = 981,604.16 × 403,324.56
  4. Step 4: Simplify right side
    655,885.40x = 395,905,065,926.17
  5. Step 5: Solve for x
    x = 395,905,065,926.17/655,885.40
  6. Step 6: Final answer
    x = 603,619.27

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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.