Home / 419,869.90-629,785.72-135,573.58

Finding the Fourth Proportional to 419,869.90, 629,785.72 and 135,573.58

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Solution

The fourth proportional to 419,869.90, 629,785.72 and 135,573.58 is: 203,354.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,869.90 : 629,785.72 = 135,573.58 : x
  2. Step 2: Convert to fraction form
    419,869.90/629,785.72 = 135,573.58/x
  3. Step 3: Cross multiply
    419,869.90x = 629,785.72 × 135,573.58
  4. Step 4: Simplify right side
    419,869.90x = 85,382,304,693.28
  5. Step 5: Solve for x
    x = 85,382,304,693.28/419,869.90
  6. Step 6: Final answer
    x = 203,354.19

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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.