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Finding the Fourth Proportional to 500,589.48, 690,813.71 and 271,146.08

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Solution

The fourth proportional to 500,589.48, 690,813.71 and 271,146.08 is: 374,181.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,589.48 : 690,813.71 = 271,146.08 : x
  2. Step 2: Convert to fraction form
    500,589.48/690,813.71 = 271,146.08/x
  3. Step 3: Cross multiply
    500,589.48x = 690,813.71 × 271,146.08
  4. Step 4: Simplify right side
    500,589.48x = 187,311,426,979.03
  5. Step 5: Solve for x
    x = 187,311,426,979.03/500,589.48
  6. Step 6: Final answer
    x = 374,181.71

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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.