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Finding the Fourth Proportional to 12,397,277.80, 18,595,916.70 and 8,978,340.70

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Solution

The fourth proportional to 12,397,277.80, 18,595,916.70 and 8,978,340.70 is: 13,467,511.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,397,277.80 : 18,595,916.70 = 8,978,340.70 : x
  2. Step 2: Convert to fraction form
    12,397,277.80/18,595,916.70 = 8,978,340.70/x
  3. Step 3: Cross multiply
    12,397,277.80x = 18,595,916.70 × 8,978,340.70
  4. Step 4: Simplify right side
    12,397,277.80x = 166,960,475,761,419.66
  5. Step 5: Solve for x
    x = 166,960,475,761,419.66/12,397,277.80
  6. Step 6: Final answer
    x = 13,467,511.05

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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.