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Finding the Fourth Proportional to 6,978,687.96, 10,468,018.92 and 2,186,744.28

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Solution

The fourth proportional to 6,978,687.96, 10,468,018.92 and 2,186,744.28 is: 3,280,112.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,978,687.96 : 10,468,018.92 = 2,186,744.28 : x
  2. Step 2: Convert to fraction form
    6,978,687.96/10,468,018.92 = 2,186,744.28/x
  3. Step 3: Cross multiply
    6,978,687.96x = 10,468,018.92 × 2,186,744.28
  4. Step 4: Simplify right side
    6,978,687.96x = 22,890,880,496,241.77
  5. Step 5: Solve for x
    x = 22,890,880,496,241.77/6,978,687.96
  6. Step 6: Final answer
    x = 3,280,112.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.