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Finding the Fourth Proportional to 28,978,780.80, 43,418,404.80 and 15,311,683.20

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Solution

The fourth proportional to 28,978,780.80, 43,418,404.80 and 15,311,683.20 is: 22,941,229.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,978,780.80 : 43,418,404.80 = 15,311,683.20 : x
  2. Step 2: Convert to fraction form
    28,978,780.80/43,418,404.80 = 15,311,683.20/x
  3. Step 3: Cross multiply
    28,978,780.80x = 43,418,404.80 × 15,311,683.20
  4. Step 4: Simplify right side
    28,978,780.80x = 664,808,859,346,959.25
  5. Step 5: Solve for x
    x = 664,808,859,346,959.25/28,978,780.80
  6. Step 6: Final answer
    x = 22,941,229.44

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