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Finding the Fourth Proportional to 500,452.48, 690,626.30 and 271,009.87

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Solution

The fourth proportional to 500,452.48, 690,626.30 and 271,009.87 is: 373,994.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,452.48 : 690,626.30 = 271,009.87 : x
  2. Step 2: Convert to fraction form
    500,452.48/690,626.30 = 271,009.87/x
  3. Step 3: Cross multiply
    500,452.48x = 690,626.30 × 271,009.87
  4. Step 4: Simplify right side
    500,452.48x = 187,166,543,781.58
  5. Step 5: Solve for x
    x = 187,166,543,781.58/500,452.48
  6. Step 6: Final answer
    x = 373,994.64

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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.