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Finding the Fourth Proportional to 451,488.15, 677,344.97 and 318,627.90

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Solution

The fourth proportional to 451,488.15, 677,344.97 and 318,627.90 is: 478,021.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,488.15 : 677,344.97 = 318,627.90 : x
  2. Step 2: Convert to fraction form
    451,488.15/677,344.97 = 318,627.90/x
  3. Step 3: Cross multiply
    451,488.15x = 677,344.97 × 318,627.90
  4. Step 4: Simplify right side
    451,488.15x = 215,821,006,163.23
  5. Step 5: Solve for x
    x = 215,821,006,163.23/451,488.15
  6. Step 6: Final answer
    x = 478,021.42

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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.