Home / 419,678.58-629,456.37-206,389.18

Finding the Fourth Proportional to 419,678.58, 629,456.37 and 206,389.18

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Solution

The fourth proportional to 419,678.58, 629,456.37 and 206,389.18 is: 309,553.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,678.58 : 629,456.37 = 206,389.18 : x
  2. Step 2: Convert to fraction form
    419,678.58/629,456.37 = 206,389.18/x
  3. Step 3: Cross multiply
    419,678.58x = 629,456.37 × 206,389.18
  4. Step 4: Simplify right side
    419,678.58x = 129,912,984,050.08
  5. Step 5: Solve for x
    x = 129,912,984,050.08/419,678.58
  6. Step 6: Final answer
    x = 309,553.53

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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.