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Finding the Fourth Proportional to 7,839,762, 11,759,643 and 2,520,978

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Solution

The fourth proportional to 7,839,762, 11,759,643 and 2,520,978 is: 3,781,467

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,839,762 : 11,759,643 = 2,520,978 : x
  2. Step 2: Convert to fraction form
    7,839,762/11,759,643 = 2,520,978/x
  3. Step 3: Cross multiply
    7,839,762x = 11,759,643 × 2,520,978
  4. Step 4: Simplify right side
    7,839,762x = 29,645,801,290,854
  5. Step 5: Solve for x
    x = 29,645,801,290,854/7,839,762
  6. Step 6: Final answer
    x = 3,781,467

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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.