Home / 405,743.14-608,646.39-135,872.29

Finding the Fourth Proportional to 405,743.14, 608,646.39 and 135,872.29

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Solution

The fourth proportional to 405,743.14, 608,646.39 and 135,872.29 is: 203,819.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,743.14 : 608,646.39 = 135,872.29 : x
  2. Step 2: Convert to fraction form
    405,743.14/608,646.39 = 135,872.29/x
  3. Step 3: Cross multiply
    405,743.14x = 608,646.39 × 135,872.29
  4. Step 4: Simplify right side
    405,743.14x = 82,698,178,809.53
  5. Step 5: Solve for x
    x = 82,698,178,809.53/405,743.14
  6. Step 6: Final answer
    x = 203,819.04

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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.