Home / 538,234.20-807,351.30-455,290.20

Finding the Fourth Proportional to 538,234.20, 807,351.30 and 455,290.20

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Solution

The fourth proportional to 538,234.20, 807,351.30 and 455,290.20 is: 682,935.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,234.20 : 807,351.30 = 455,290.20 : x
  2. Step 2: Convert to fraction form
    538,234.20/807,351.30 = 455,290.20/x
  3. Step 3: Cross multiply
    538,234.20x = 807,351.30 × 455,290.20
  4. Step 4: Simplify right side
    538,234.20x = 367,579,134,847.26
  5. Step 5: Solve for x
    x = 367,579,134,847.26/538,234.20
  6. Step 6: Final answer
    x = 682,935.30

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Half scale
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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.