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Finding the Fourth Proportional to 627,481.56, 865,922.16 and 355,601.28

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Solution

The fourth proportional to 627,481.56, 865,922.16 and 355,601.28 is: 490,728.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,481.56 : 865,922.16 = 355,601.28 : x
  2. Step 2: Convert to fraction form
    627,481.56/865,922.16 = 355,601.28/x
  3. Step 3: Cross multiply
    627,481.56x = 865,922.16 × 355,601.28
  4. Step 4: Simplify right side
    627,481.56x = 307,923,028,476.37
  5. Step 5: Solve for x
    x = 307,923,028,476.37/627,481.56
  6. Step 6: Final answer
    x = 490,728.41

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1.5x scale

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.