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Finding the Fourth Proportional to 500,574.86, 690,787.81 and 271,126.44

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Solution

The fourth proportional to 500,574.86, 690,787.81 and 271,126.44 is: 374,151.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,574.86 : 690,787.81 = 271,126.44 : x
  2. Step 2: Convert to fraction form
    500,574.86/690,787.81 = 271,126.44/x
  3. Step 3: Cross multiply
    500,574.86x = 690,787.81 × 271,126.44
  4. Step 4: Simplify right side
    500,574.86x = 187,290,839,720.70
  5. Step 5: Solve for x
    x = 187,290,839,720.70/500,574.86
  6. Step 6: Final answer
    x = 374,151.51

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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.