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Finding the Fourth Proportional to 7,897,687.80, 11,846,531.70 and 2,218,097.40

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Solution

The fourth proportional to 7,897,687.80, 11,846,531.70 and 2,218,097.40 is: 3,327,146.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,897,687.80 : 11,846,531.70 = 2,218,097.40 : x
  2. Step 2: Convert to fraction form
    7,897,687.80/11,846,531.70 = 2,218,097.40/x
  3. Step 3: Cross multiply
    7,897,687.80x = 11,846,531.70 × 2,218,097.40
  4. Step 4: Simplify right side
    7,897,687.80x = 26,276,761,162,787.58
  5. Step 5: Solve for x
    x = 26,276,761,162,787.58/7,897,687.80
  6. Step 6: Final answer
    x = 3,327,146.10

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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.