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Finding the Fourth Proportional to 6,381,239.88, 8,809,361.80 and 4,927,672.20

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Solution

The fourth proportional to 6,381,239.88, 8,809,361.80 and 4,927,672.20 is: 6,802,697.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,381,239.88 : 8,809,361.80 = 4,927,672.20 : x
  2. Step 2: Convert to fraction form
    6,381,239.88/8,809,361.80 = 4,927,672.20/x
  3. Step 3: Cross multiply
    6,381,239.88x = 8,809,361.80 × 4,927,672.20
  4. Step 4: Simplify right side
    6,381,239.88x = 43,409,647,241,601.97
  5. Step 5: Solve for x
    x = 43,409,647,241,601.97/6,381,239.88
  6. Step 6: Final answer
    x = 6,802,697.92

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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.