Home / 3,981,636.20-5,972,475.90-989,820.20

Finding the Fourth Proportional to 3,981,636.20, 5,972,475.90 and 989,820.20

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Solution

The fourth proportional to 3,981,636.20, 5,972,475.90 and 989,820.20 is: 1,484,735.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981,636.20 : 5,972,475.90 = 989,820.20 : x
  2. Step 2: Convert to fraction form
    3,981,636.20/5,972,475.90 = 989,820.20/x
  3. Step 3: Cross multiply
    3,981,636.20x = 5,972,475.90 × 989,820.20
  4. Step 4: Simplify right side
    3,981,636.20x = 5,911,677,289,833.18
  5. Step 5: Solve for x
    x = 5,911,677,289,833.18/3,981,636.20
  6. Step 6: Final answer
    x = 1,484,735.67

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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.