Home / 629,187.12-868,467.96-428,099.76

Finding the Fourth Proportional to 629,187.12, 868,467.96 and 428,099.76

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Solution

The fourth proportional to 629,187.12, 868,467.96 and 428,099.76 is: 590,906.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,187.12 : 868,467.96 = 428,099.76 : x
  2. Step 2: Convert to fraction form
    629,187.12/868,467.96 = 428,099.76/x
  3. Step 3: Cross multiply
    629,187.12x = 868,467.96 × 428,099.76
  4. Step 4: Simplify right side
    629,187.12x = 371,790,925,243.69
  5. Step 5: Solve for x
    x = 371,790,925,243.69/629,187.12
  6. Step 6: Final answer
    x = 590,906.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.