Home / 402,408,979.20-603,613,468.80-329,707,850.40

Finding the Fourth Proportional to 402,408,979.20, 603,613,468.80 and 329,707,850.40

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Solution

The fourth proportional to 402,408,979.20, 603,613,468.80 and 329,707,850.40 is: 494,561,775.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,408,979.20 : 603,613,468.80 = 329,707,850.40 : x
  2. Step 2: Convert to fraction form
    402,408,979.20/603,613,468.80 = 329,707,850.40/x
  3. Step 3: Cross multiply
    402,408,979.20x = 603,613,468.80 × 329,707,850.40
  4. Step 4: Simplify right side
    402,408,979.20x = 199,016,099,270,535,424
  5. Step 5: Solve for x
    x = 199,016,099,270,535,424/402,408,979.20
  6. Step 6: Final answer
    x = 494,561,775.60

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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.