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Finding the Fourth Proportional to 7,113,493.50, 9,816,621.51 and 3,894,229.50

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Solution

The fourth proportional to 7,113,493.50, 9,816,621.51 and 3,894,229.50 is: 5,374,036.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,113,493.50 : 9,816,621.51 = 3,894,229.50 : x
  2. Step 2: Convert to fraction form
    7,113,493.50/9,816,621.51 = 3,894,229.50/x
  3. Step 3: Cross multiply
    7,113,493.50x = 9,816,621.51 × 3,894,229.50
  4. Step 4: Simplify right side
    7,113,493.50x = 38,228,177,074,576.55
  5. Step 5: Solve for x
    x = 38,228,177,074,576.55/7,113,493.50
  6. Step 6: Final answer
    x = 5,374,036.97

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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.