Home / 491,982.36-678,845.52-277,076.40

Finding the Fourth Proportional to 491,982.36, 678,845.52 and 277,076.40

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Solution

The fourth proportional to 491,982.36, 678,845.52 and 277,076.40 is: 382,314.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,982.36 : 678,845.52 = 277,076.40 : x
  2. Step 2: Convert to fraction form
    491,982.36/678,845.52 = 277,076.40/x
  3. Step 3: Cross multiply
    491,982.36x = 678,845.52 × 277,076.40
  4. Step 4: Simplify right side
    491,982.36x = 188,092,072,837.73
  5. Step 5: Solve for x
    x = 188,092,072,837.73/491,982.36
  6. Step 6: Final answer
    x = 382,314.67

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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.