Home / 419,954.12-629,485.58-206,420.91

Finding the Fourth Proportional to 419,954.12, 629,485.58 and 206,420.91

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Solution

The fourth proportional to 419,954.12, 629,485.58 and 206,420.91 is: 309,412.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,954.12 : 629,485.58 = 206,420.91 : x
  2. Step 2: Convert to fraction form
    419,954.12/629,485.58 = 206,420.91/x
  3. Step 3: Cross multiply
    419,954.12x = 629,485.58 × 206,420.91
  4. Step 4: Simplify right side
    419,954.12x = 129,938,983,249.84
  5. Step 5: Solve for x
    x = 129,938,983,249.84/419,954.12
  6. Step 6: Final answer
    x = 309,412.33

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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.