Home / 864,166.20-1,296,249.30-509,872.20

Finding the Fourth Proportional to 864,166.20, 1,296,249.30 and 509,872.20

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Solution

The fourth proportional to 864,166.20, 1,296,249.30 and 509,872.20 is: 764,808.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,166.20 : 1,296,249.30 = 509,872.20 : x
  2. Step 2: Convert to fraction form
    864,166.20/1,296,249.30 = 509,872.20/x
  3. Step 3: Cross multiply
    864,166.20x = 1,296,249.30 × 509,872.20
  4. Step 4: Simplify right side
    864,166.20x = 660,921,482,339.46
  5. Step 5: Solve for x
    x = 660,921,482,339.46/864,166.20
  6. Step 6: Final answer
    x = 764,808.30

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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.