Home / 780,355.35-1,170,626.85-274,811.87

Finding the Fourth Proportional to 780,355.35, 1,170,626.85 and 274,811.87

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Solution

The fourth proportional to 780,355.35, 1,170,626.85 and 274,811.87 is: 412,250.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,355.35 : 1,170,626.85 = 274,811.87 : x
  2. Step 2: Convert to fraction form
    780,355.35/1,170,626.85 = 274,811.87/x
  3. Step 3: Cross multiply
    780,355.35x = 1,170,626.85 × 274,811.87
  4. Step 4: Simplify right side
    780,355.35x = 321,702,156,647.28
  5. Step 5: Solve for x
    x = 321,702,156,647.28/780,355.35
  6. Step 6: Final answer
    x = 412,250.85

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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.