Home / 638,965.89-958,284.78-189,580.43

Finding the Fourth Proportional to 638,965.89, 958,284.78 and 189,580.43

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Solution

The fourth proportional to 638,965.89, 958,284.78 and 189,580.43 is: 284,321.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,965.89 : 958,284.78 = 189,580.43 : x
  2. Step 2: Convert to fraction form
    638,965.89/958,284.78 = 189,580.43/x
  3. Step 3: Cross multiply
    638,965.89x = 958,284.78 × 189,580.43
  4. Step 4: Simplify right side
    638,965.89x = 181,672,035,863.43
  5. Step 5: Solve for x
    x = 181,672,035,863.43/638,965.89
  6. Step 6: Final answer
    x = 284,321.96

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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.