Home / 665,913,153.56-998,965,438.92-205,887,195.14

Finding the Fourth Proportional to 665,913,153.56, 998,965,438.92 and 205,887,195.14

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Solution

The fourth proportional to 665,913,153.56, 998,965,438.92 and 205,887,195.14 is: 308,860,383.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,913,153.56 : 998,965,438.92 = 205,887,195.14 : x
  2. Step 2: Convert to fraction form
    665,913,153.56/998,965,438.92 = 205,887,195.14/x
  3. Step 3: Cross multiply
    665,913,153.56x = 998,965,438.92 × 205,887,195.14
  4. Step 4: Simplify right side
    665,913,153.56x = 205,674,192,261,037,760
  5. Step 5: Solve for x
    x = 205,674,192,261,037,760/665,913,153.56
  6. Step 6: Final answer
    x = 308,860,383.91

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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.