Home / 1,126,652.80-1,690,235.20-378,774.40

Finding the Fourth Proportional to 1,126,652.80, 1,690,235.20 and 378,774.40

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Solution

The fourth proportional to 1,126,652.80, 1,690,235.20 and 378,774.40 is: 568,247.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126,652.80 : 1,690,235.20 = 378,774.40 : x
  2. Step 2: Convert to fraction form
    1,126,652.80/1,690,235.20 = 378,774.40/x
  3. Step 3: Cross multiply
    1,126,652.80x = 1,690,235.20 × 378,774.40
  4. Step 4: Simplify right side
    1,126,652.80x = 640,217,823,738.88
  5. Step 5: Solve for x
    x = 640,217,823,738.88/1,126,652.80
  6. Step 6: Final answer
    x = 568,247.67

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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.