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Finding the Fourth Proportional to 500,863.28, 691,190 and 271,426.96

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Solution

The fourth proportional to 500,863.28, 691,190 and 271,426.96 is: 374,568.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,863.28 : 691,190 = 271,426.96 : x
  2. Step 2: Convert to fraction form
    500,863.28/691,190 = 271,426.96/x
  3. Step 3: Cross multiply
    500,863.28x = 691,190 × 271,426.96
  4. Step 4: Simplify right side
    500,863.28x = 187,607,600,482.40
  5. Step 5: Solve for x
    x = 187,607,600,482.40/500,863.28
  6. Step 6: Final answer
    x = 374,568.49

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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.