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Finding the Fourth Proportional to 2,489,894.86, 3,734,974.71 and 784,171.55

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Solution

The fourth proportional to 2,489,894.86, 3,734,974.71 and 784,171.55 is: 1,176,299.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,489,894.86 : 3,734,974.71 = 784,171.55 : x
  2. Step 2: Convert to fraction form
    2,489,894.86/3,734,974.71 = 784,171.55/x
  3. Step 3: Cross multiply
    2,489,894.86x = 3,734,974.71 × 784,171.55
  4. Step 4: Simplify right side
    2,489,894.86x = 2,928,860,888,876.63
  5. Step 5: Solve for x
    x = 2,928,860,888,876.63/2,489,894.86
  6. Step 6: Final answer
    x = 1,176,299.02

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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.