Home / 491,855,338.17-678,758,718.08-268,836,890.72

Finding the Fourth Proportional to 491,855,338.17, 678,758,718.08 and 268,836,890.72

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Solution

The fourth proportional to 491,855,338.17, 678,758,718.08 and 268,836,890.72 is: 370,994,008.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,855,338.17 : 678,758,718.08 = 268,836,890.72 : x
  2. Step 2: Convert to fraction form
    491,855,338.17/678,758,718.08 = 268,836,890.72/x
  3. Step 3: Cross multiply
    491,855,338.17x = 678,758,718.08 × 268,836,890.72
  4. Step 4: Simplify right side
    491,855,338.17x = 182,475,383,314,998,528
  5. Step 5: Solve for x
    x = 182,475,383,314,998,528/491,855,338.17
  6. Step 6: Final answer
    x = 370,994,008.10

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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.