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Finding the Fourth Proportional to 500,522.39, 690,720.29 and 271,079.54

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Solution

The fourth proportional to 500,522.39, 690,720.29 and 271,079.54 is: 374,089.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,522.39 : 690,720.29 = 271,079.54 : x
  2. Step 2: Convert to fraction form
    500,522.39/690,720.29 = 271,079.54/x
  3. Step 3: Cross multiply
    500,522.39x = 690,720.29 × 271,079.54
  4. Step 4: Simplify right side
    500,522.39x = 187,240,140,886.37
  5. Step 5: Solve for x
    x = 187,240,140,886.37/500,522.39
  6. Step 6: Final answer
    x = 374,089.44

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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.