Home / 1,260,399.20-1,891,520.40-839,535.20

Finding the Fourth Proportional to 1,260,399.20, 1,891,520.40 and 839,535.20

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Solution

The fourth proportional to 1,260,399.20, 1,891,520.40 and 839,535.20 is: 1,259,916.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,399.20 : 1,891,520.40 = 839,535.20 : x
  2. Step 2: Convert to fraction form
    1,260,399.20/1,891,520.40 = 839,535.20/x
  3. Step 3: Cross multiply
    1,260,399.20x = 1,891,520.40 × 839,535.20
  4. Step 4: Simplify right side
    1,260,399.20x = 1,587,997,957,318.08
  5. Step 5: Solve for x
    x = 1,587,997,957,318.08/1,260,399.20
  6. Step 6: Final answer
    x = 1,259,916.67

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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.