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Finding the Fourth Proportional to 620,005.24, 855,578.10 and 344,380.98

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Solution

The fourth proportional to 620,005.24, 855,578.10 and 344,380.98 is: 475,229.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,005.24 : 855,578.10 = 344,380.98 : x
  2. Step 2: Convert to fraction form
    620,005.24/855,578.10 = 344,380.98/x
  3. Step 3: Cross multiply
    620,005.24x = 855,578.10 × 344,380.98
  4. Step 4: Simplify right side
    620,005.24x = 294,644,824,544.54
  5. Step 5: Solve for x
    x = 294,644,824,544.54/620,005.24
  6. Step 6: Final answer
    x = 475,229.57

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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.