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Finding the Fourth Proportional to 419,636.58, 629,895.15 and 371,910.69

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Solution

The fourth proportional to 419,636.58, 629,895.15 and 371,910.69 is: 558,256.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,636.58 : 629,895.15 = 371,910.69 : x
  2. Step 2: Convert to fraction form
    419,636.58/629,895.15 = 371,910.69/x
  3. Step 3: Cross multiply
    419,636.58x = 629,895.15 × 371,910.69
  4. Step 4: Simplify right side
    419,636.58x = 234,264,736,312.73
  5. Step 5: Solve for x
    x = 234,264,736,312.73/419,636.58
  6. Step 6: Final answer
    x = 558,256.23

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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.