Home / 509,105.14-763,645.88-256,317.75

Finding the Fourth Proportional to 509,105.14, 763,645.88 and 256,317.75

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Solution

The fourth proportional to 509,105.14, 763,645.88 and 256,317.75 is: 384,470.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,105.14 : 763,645.88 = 256,317.75 : x
  2. Step 2: Convert to fraction form
    509,105.14/763,645.88 = 256,317.75/x
  3. Step 3: Cross multiply
    509,105.14x = 763,645.88 × 256,317.75
  4. Step 4: Simplify right side
    509,105.14x = 195,735,993,758.37
  5. Step 5: Solve for x
    x = 195,735,993,758.37/509,105.14
  6. Step 6: Final answer
    x = 384,470.67

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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.