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Finding the Fourth Proportional to 6,391,987.08, 8,820,932.31 and 3,491,377.98

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Solution

The fourth proportional to 6,391,987.08, 8,820,932.31 and 3,491,377.98 is: 4,818,096.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,391,987.08 : 8,820,932.31 = 3,491,377.98 : x
  2. Step 2: Convert to fraction form
    6,391,987.08/8,820,932.31 = 3,491,377.98/x
  3. Step 3: Cross multiply
    6,391,987.08x = 8,820,932.31 × 3,491,377.98
  4. Step 4: Simplify right side
    6,391,987.08x = 30,797,208,830,204.54
  5. Step 5: Solve for x
    x = 30,797,208,830,204.54/6,391,987.08
  6. Step 6: Final answer
    x = 4,818,096.23

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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.