Home / 491,855,339.17-678,758,719.46-268,836,891.72

Finding the Fourth Proportional to 491,855,339.17, 678,758,719.46 and 268,836,891.72

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Solution

The fourth proportional to 491,855,339.17, 678,758,719.46 and 268,836,891.72 is: 370,994,009.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,855,339.17 : 678,758,719.46 = 268,836,891.72 : x
  2. Step 2: Convert to fraction form
    491,855,339.17/678,758,719.46 = 268,836,891.72/x
  3. Step 3: Cross multiply
    491,855,339.17x = 678,758,719.46 × 268,836,891.72
  4. Step 4: Simplify right side
    491,855,339.17x = 182,475,384,367,473,920
  5. Step 5: Solve for x
    x = 182,475,384,367,473,920/491,855,339.17
  6. Step 6: Final answer
    x = 370,994,009.49

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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.