Home / 491,631,886.74-678,443,977.80-268,608,768.78

Finding the Fourth Proportional to 491,631,886.74, 678,443,977.80 and 268,608,768.78

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Solution

The fourth proportional to 491,631,886.74, 678,443,977.80 and 268,608,768.78 is: 370,675,715.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,631,886.74 : 678,443,977.80 = 268,608,768.78 : x
  2. Step 2: Convert to fraction form
    491,631,886.74/678,443,977.80 = 268,608,768.78/x
  3. Step 3: Cross multiply
    491,631,886.74x = 678,443,977.80 × 268,608,768.78
  4. Step 4: Simplify right side
    491,631,886.74x = 182,236,001,563,063,616
  5. Step 5: Solve for x
    x = 182,236,001,563,063,616/491,631,886.74
  6. Step 6: Final answer
    x = 370,675,715.87

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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.