Home / 491,457,815.52-678,207,754.88-268,439,639.36

Finding the Fourth Proportional to 491,457,815.52, 678,207,754.88 and 268,439,639.36

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Solution

The fourth proportional to 491,457,815.52, 678,207,754.88 and 268,439,639.36 is: 370,444,500.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,457,815.52 : 678,207,754.88 = 268,439,639.36 : x
  2. Step 2: Convert to fraction form
    491,457,815.52/678,207,754.88 = 268,439,639.36/x
  3. Step 3: Cross multiply
    491,457,815.52x = 678,207,754.88 × 268,439,639.36
  4. Step 4: Simplify right side
    491,457,815.52x = 182,057,845,131,142,496
  5. Step 5: Solve for x
    x = 182,057,845,131,142,496/491,457,815.52
  6. Step 6: Final answer
    x = 370,444,500.79

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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.