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Finding the Fourth Proportional to 7,170,229.19, 9,894,788.19 and 3,907,072.10

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Solution

The fourth proportional to 7,170,229.19, 9,894,788.19 and 3,907,072.10 is: 5,391,689.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,170,229.19 : 9,894,788.19 = 3,907,072.10 : x
  2. Step 2: Convert to fraction form
    7,170,229.19/9,894,788.19 = 3,907,072.10/x
  3. Step 3: Cross multiply
    7,170,229.19x = 9,894,788.19 × 3,907,072.10
  4. Step 4: Simplify right side
    7,170,229.19x = 38,659,650,823,084.55
  5. Step 5: Solve for x
    x = 38,659,650,823,084.55/7,170,229.19
  6. Step 6: Final answer
    x = 5,391,689.70

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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.