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Finding the Fourth Proportional to 6,289,846.92, 8,679,389.04 and 3,676,961.88

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Solution

The fourth proportional to 6,289,846.92, 8,679,389.04 and 3,676,961.88 is: 5,073,856.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,289,846.92 : 8,679,389.04 = 3,676,961.88 : x
  2. Step 2: Convert to fraction form
    6,289,846.92/8,679,389.04 = 3,676,961.88/x
  3. Step 3: Cross multiply
    6,289,846.92x = 8,679,389.04 × 3,676,961.88
  4. Step 4: Simplify right side
    6,289,846.92x = 31,913,782,641,769.79
  5. Step 5: Solve for x
    x = 31,913,782,641,769.79/6,289,846.92
  6. Step 6: Final answer
    x = 5,073,856.81

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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.