Home / 500,718.11-690,988.12-271,279.94

Finding the Fourth Proportional to 500,718.11, 690,988.12 and 271,279.94

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Solution

The fourth proportional to 500,718.11, 690,988.12 and 271,279.94 is: 374,364.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,718.11 : 690,988.12 = 271,279.94 : x
  2. Step 2: Convert to fraction form
    500,718.11/690,988.12 = 271,279.94/x
  3. Step 3: Cross multiply
    500,718.11x = 690,988.12 × 271,279.94
  4. Step 4: Simplify right side
    500,718.11x = 187,451,211,601.17
  5. Step 5: Solve for x
    x = 187,451,211,601.17/500,718.11
  6. Step 6: Final answer
    x = 374,364.76

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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.