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Finding the Fourth Proportional to 500,863.78, 691,190.69 and 271,427.46

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Solution

The fourth proportional to 500,863.78, 691,190.69 and 271,427.46 is: 374,569.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,863.78 : 691,190.69 = 271,427.46 : x
  2. Step 2: Convert to fraction form
    500,863.78/691,190.69 = 271,427.46/x
  3. Step 3: Cross multiply
    500,863.78x = 691,190.69 × 271,427.46
  4. Step 4: Simplify right side
    500,863.78x = 187,608,133,362.35
  5. Step 5: Solve for x
    x = 187,608,133,362.35/500,863.78
  6. Step 6: Final answer
    x = 374,569.18

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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.