Home / 638,234.20-957,351.30-520,136.20

Finding the Fourth Proportional to 638,234.20, 957,351.30 and 520,136.20

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Solution

The fourth proportional to 638,234.20, 957,351.30 and 520,136.20 is: 780,204.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,234.20 : 957,351.30 = 520,136.20 : x
  2. Step 2: Convert to fraction form
    638,234.20/957,351.30 = 520,136.20/x
  3. Step 3: Cross multiply
    638,234.20x = 957,351.30 × 520,136.20
  4. Step 4: Simplify right side
    638,234.20x = 497,953,067,247.06
  5. Step 5: Solve for x
    x = 497,953,067,247.06/638,234.20
  6. Step 6: Final answer
    x = 780,204.30

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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.