Home / 491,855,131.64-678,758,433.78-268,836,684.09

Finding the Fourth Proportional to 491,855,131.64, 678,758,433.78 and 268,836,684.09

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Solution

The fourth proportional to 491,855,131.64, 678,758,433.78 and 268,836,684.09 is: 370,993,723.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,855,131.64 : 678,758,433.78 = 268,836,684.09 : x
  2. Step 2: Convert to fraction form
    491,855,131.64/678,758,433.78 = 268,836,684.09/x
  3. Step 3: Cross multiply
    491,855,131.64x = 678,758,433.78 × 268,836,684.09
  4. Step 4: Simplify right side
    491,855,131.64x = 182,475,166,635,537,024
  5. Step 5: Solve for x
    x = 182,475,166,635,537,024/491,855,131.64
  6. Step 6: Final answer
    x = 370,993,723.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.