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Finding the Fourth Proportional to 6,391,988.58, 8,820,934.38 and 3,491,379.48

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Solution

The fourth proportional to 6,391,988.58, 8,820,934.38 and 3,491,379.48 is: 4,818,098.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,391,988.58 : 8,820,934.38 = 3,491,379.48 : x
  2. Step 2: Convert to fraction form
    6,391,988.58/8,820,934.38 = 3,491,379.48/x
  3. Step 3: Cross multiply
    6,391,988.58x = 8,820,934.38 × 3,491,379.48
  4. Step 4: Simplify right side
    6,391,988.58x = 30,797,229,288,758.52
  5. Step 5: Solve for x
    x = 30,797,229,288,758.52/6,391,988.58
  6. Step 6: Final answer
    x = 4,818,098.30

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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.