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Finding the Fourth Proportional to 655,849.26, 905,136.54 and 383,900.67

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Solution

The fourth proportional to 655,849.26, 905,136.54 and 383,900.67 is: 529,820.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,849.26 : 905,136.54 = 383,900.67 : x
  2. Step 2: Convert to fraction form
    655,849.26/905,136.54 = 383,900.67/x
  3. Step 3: Cross multiply
    655,849.26x = 905,136.54 × 383,900.67
  4. Step 4: Simplify right side
    655,849.26x = 347,482,524,147.48
  5. Step 5: Solve for x
    x = 347,482,524,147.48/655,849.26
  6. Step 6: Final answer
    x = 529,820.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.