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Finding the Fourth Proportional to 3,380,716.88, 5,071,260 and 856,394

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Solution

The fourth proportional to 3,380,716.88, 5,071,260 and 856,394 is: 1,284,637.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,380,716.88 : 5,071,260 = 856,394 : x
  2. Step 2: Convert to fraction form
    3,380,716.88/5,071,260 = 856,394/x
  3. Step 3: Cross multiply
    3,380,716.88x = 5,071,260 × 856,394
  4. Step 4: Simplify right side
    3,380,716.88x = 4,342,996,636,440
  5. Step 5: Solve for x
    x = 4,342,996,636,440/3,380,716.88
  6. Step 6: Final answer
    x = 1,284,637.78

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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.