Home / 491,659,419.14-678,469,808.72-268,648,756.48

Finding the Fourth Proportional to 491,659,419.14, 678,469,808.72 and 268,648,756.48

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Solution

The fourth proportional to 491,659,419.14, 678,469,808.72 and 268,648,756.48 is: 370,724,252.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,659,419.14 : 678,469,808.72 = 268,648,756.48 : x
  2. Step 2: Convert to fraction form
    491,659,419.14/678,469,808.72 = 268,648,756.48/x
  3. Step 3: Cross multiply
    491,659,419.14x = 678,469,808.72 × 268,648,756.48
  4. Step 4: Simplify right side
    491,659,419.14x = 182,270,070,421,851,488
  5. Step 5: Solve for x
    x = 182,270,070,421,851,488/491,659,419.14
  6. Step 6: Final answer
    x = 370,724,252.05

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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.