Home / 1,126,656.80-1,690,241.20-378,778.40

Finding the Fourth Proportional to 1,126,656.80, 1,690,241.20 and 378,778.40

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Solution

The fourth proportional to 1,126,656.80, 1,690,241.20 and 378,778.40 is: 568,253.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126,656.80 : 1,690,241.20 = 378,778.40 : x
  2. Step 2: Convert to fraction form
    1,126,656.80/1,690,241.20 = 378,778.40/x
  3. Step 3: Cross multiply
    1,126,656.80x = 1,690,241.20 × 378,778.40
  4. Step 4: Simplify right side
    1,126,656.80x = 640,226,857,350.08
  5. Step 5: Solve for x
    x = 640,226,857,350.08/1,126,656.80
  6. Step 6: Final answer
    x = 568,253.67

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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.