Home / 950,138.40-1,311,191.12-520,433.84

Finding the Fourth Proportional to 950,138.40, 1,311,191.12 and 520,433.84

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Solution

The fourth proportional to 950,138.40, 1,311,191.12 and 520,433.84 is: 718,198.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    950,138.40 : 1,311,191.12 = 520,433.84 : x
  2. Step 2: Convert to fraction form
    950,138.40/1,311,191.12 = 520,433.84/x
  3. Step 3: Cross multiply
    950,138.40x = 1,311,191.12 × 520,433.84
  4. Step 4: Simplify right side
    950,138.40x = 682,388,229,555.50
  5. Step 5: Solve for x
    x = 682,388,229,555.50/950,138.40
  6. Step 6: Final answer
    x = 718,198.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.