Home / 640,213.77-960,453.24-261,135.57

Finding the Fourth Proportional to 640,213.77, 960,453.24 and 261,135.57

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Solution

The fourth proportional to 640,213.77, 960,453.24 and 261,135.57 is: 391,757.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,213.77 : 960,453.24 = 261,135.57 : x
  2. Step 2: Convert to fraction form
    640,213.77/960,453.24 = 261,135.57/x
  3. Step 3: Cross multiply
    640,213.77x = 960,453.24 × 261,135.57
  4. Step 4: Simplify right side
    640,213.77x = 250,808,504,285.75
  5. Step 5: Solve for x
    x = 250,808,504,285.75/640,213.77
  6. Step 6: Final answer
    x = 391,757.43

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1.5x scale

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.