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Finding the Fourth Proportional to 627,085.70, 940,648.07 and 298,378.45

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Solution

The fourth proportional to 627,085.70, 940,648.07 and 298,378.45 is: 447,576.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,085.70 : 940,648.07 = 298,378.45 : x
  2. Step 2: Convert to fraction form
    627,085.70/940,648.07 = 298,378.45/x
  3. Step 3: Cross multiply
    627,085.70x = 940,648.07 × 298,378.45
  4. Step 4: Simplify right side
    627,085.70x = 280,669,115,043.85
  5. Step 5: Solve for x
    x = 280,669,115,043.85/627,085.70
  6. Step 6: Final answer
    x = 447,576.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.