Home / 639,928.48-960,879.20-541,383.52

Finding the Fourth Proportional to 639,928.48, 960,879.20 and 541,383.52

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Solution

The fourth proportional to 639,928.48, 960,879.20 and 541,383.52 is: 812,909.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,928.48 : 960,879.20 = 541,383.52 : x
  2. Step 2: Convert to fraction form
    639,928.48/960,879.20 = 541,383.52/x
  3. Step 3: Cross multiply
    639,928.48x = 960,879.20 × 541,383.52
  4. Step 4: Simplify right side
    639,928.48x = 520,204,163,590.78
  5. Step 5: Solve for x
    x = 520,204,163,590.78/639,928.48
  6. Step 6: Final answer
    x = 812,909.85

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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.