Home / 491,855,133.39-678,758,436.18-268,836,685.84

Finding the Fourth Proportional to 491,855,133.39, 678,758,436.18 and 268,836,685.84

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Solution

The fourth proportional to 491,855,133.39, 678,758,436.18 and 268,836,685.84 is: 370,993,725.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,855,133.39 : 678,758,436.18 = 268,836,685.84 : x
  2. Step 2: Convert to fraction form
    491,855,133.39/678,758,436.18 = 268,836,685.84/x
  3. Step 3: Cross multiply
    491,855,133.39x = 678,758,436.18 × 268,836,685.84
  4. Step 4: Simplify right side
    491,855,133.39x = 182,475,168,468,572,320
  5. Step 5: Solve for x
    x = 182,475,168,468,572,320/491,855,133.39
  6. Step 6: Final answer
    x = 370,993,725.76

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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.