Home / 518,338,029.72-777,702,861.40-311,220,857.40

Finding the Fourth Proportional to 518,338,029.72, 777,702,861.40 and 311,220,857.40

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Solution

The fourth proportional to 518,338,029.72, 777,702,861.40 and 311,220,857.40 is: 466,948,858.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,338,029.72 : 777,702,861.40 = 311,220,857.40 : x
  2. Step 2: Convert to fraction form
    518,338,029.72/777,702,861.40 = 311,220,857.40/x
  3. Step 3: Cross multiply
    518,338,029.72x = 777,702,861.40 × 311,220,857.40
  4. Step 4: Simplify right side
    518,338,029.72x = 242,037,351,327,341,344
  5. Step 5: Solve for x
    x = 242,037,351,327,341,344/518,338,029.72
  6. Step 6: Final answer
    x = 466,948,858.56

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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.