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Finding the Fourth Proportional to 436,589,748.80, 655,203,487.80 and 307,449,585.80

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Solution

The fourth proportional to 436,589,748.80, 655,203,487.80 and 307,449,585.80 is: 461,398,925.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,589,748.80 : 655,203,487.80 = 307,449,585.80 : x
  2. Step 2: Convert to fraction form
    436,589,748.80/655,203,487.80 = 307,449,585.80/x
  3. Step 3: Cross multiply
    436,589,748.80x = 655,203,487.80 × 307,449,585.80
  4. Step 4: Simplify right side
    436,589,748.80x = 201,442,040,938,825,344
  5. Step 5: Solve for x
    x = 201,442,040,938,825,344/436,589,748.80
  6. Step 6: Final answer
    x = 461,398,925.40

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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.