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Finding the Fourth Proportional to 653,773.62, 982,136.72 and 387,708.67

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Solution

The fourth proportional to 653,773.62, 982,136.72 and 387,708.67 is: 582,438.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,773.62 : 982,136.72 = 387,708.67 : x
  2. Step 2: Convert to fraction form
    653,773.62/982,136.72 = 387,708.67/x
  3. Step 3: Cross multiply
    653,773.62x = 982,136.72 × 387,708.67
  4. Step 4: Simplify right side
    653,773.62x = 380,782,921,469.36
  5. Step 5: Solve for x
    x = 380,782,921,469.36/653,773.62
  6. Step 6: Final answer
    x = 582,438.49

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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.