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Finding the Fourth Proportional to 1,270,664.77, 1,905,997.84 and 797,682.28

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Solution

The fourth proportional to 1,270,664.77, 1,905,997.84 and 797,682.28 is: 1,196,523.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,270,664.77 : 1,905,997.84 = 797,682.28 : x
  2. Step 2: Convert to fraction form
    1,270,664.77/1,905,997.84 = 797,682.28/x
  3. Step 3: Cross multiply
    1,270,664.77x = 1,905,997.84 × 797,682.28
  4. Step 4: Simplify right side
    1,270,664.77x = 1,520,380,699,500.82
  5. Step 5: Solve for x
    x = 1,520,380,699,500.82/1,270,664.77
  6. Step 6: Final answer
    x = 1,196,523.85

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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.