Home / 426,581.28-639,991.60-186,716.18

Finding the Fourth Proportional to 426,581.28, 639,991.60 and 186,716.18

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Solution

The fourth proportional to 426,581.28, 639,991.60 and 186,716.18 is: 280,126.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,581.28 : 639,991.60 = 186,716.18 : x
  2. Step 2: Convert to fraction form
    426,581.28/639,991.60 = 186,716.18/x
  3. Step 3: Cross multiply
    426,581.28x = 639,991.60 × 186,716.18
  4. Step 4: Simplify right side
    426,581.28x = 119,496,787,917.28
  5. Step 5: Solve for x
    x = 119,496,787,917.28/426,581.28
  6. Step 6: Final answer
    x = 280,126.66

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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.