Home / 491,951,028.48-678,893,787.63-268,935,405

Finding the Fourth Proportional to 491,951,028.48, 678,893,787.63 and 268,935,405

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Solution

The fourth proportional to 491,951,028.48, 678,893,787.63 and 268,935,405 is: 371,131,606.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,951,028.48 : 678,893,787.63 = 268,935,405 : x
  2. Step 2: Convert to fraction form
    491,951,028.48/678,893,787.63 = 268,935,405/x
  3. Step 3: Cross multiply
    491,951,028.48x = 678,893,787.63 × 268,935,405
  4. Step 4: Simplify right side
    491,951,028.48x = 182,578,575,728,258,048
  5. Step 5: Solve for x
    x = 182,578,575,728,258,048/491,951,028.48
  6. Step 6: Final answer
    x = 371,131,606.93

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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.