Home / 859,098.80-1,288,648.20-540,234.20

Finding the Fourth Proportional to 859,098.80, 1,288,648.20 and 540,234.20

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Solution

The fourth proportional to 859,098.80, 1,288,648.20 and 540,234.20 is: 810,351.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,098.80 : 1,288,648.20 = 540,234.20 : x
  2. Step 2: Convert to fraction form
    859,098.80/1,288,648.20 = 540,234.20/x
  3. Step 3: Cross multiply
    859,098.80x = 1,288,648.20 × 540,234.20
  4. Step 4: Simplify right side
    859,098.80x = 696,171,829,408.44
  5. Step 5: Solve for x
    x = 696,171,829,408.44/859,098.80
  6. Step 6: Final answer
    x = 810,351.30

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Double scale
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Similar ratio
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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.