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Finding the Fourth Proportional to 1,279,805.49, 1,766,099.82 and 735,928.32

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Solution

The fourth proportional to 1,279,805.49, 1,766,099.82 and 735,928.32 is: 1,015,562.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,805.49 : 1,766,099.82 = 735,928.32 : x
  2. Step 2: Convert to fraction form
    1,279,805.49/1,766,099.82 = 735,928.32/x
  3. Step 3: Cross multiply
    1,279,805.49x = 1,766,099.82 × 735,928.32
  4. Step 4: Simplify right side
    1,279,805.49x = 1,299,722,873,484.90
  5. Step 5: Solve for x
    x = 1,299,722,873,484.90/1,279,805.49
  6. Step 6: Final answer
    x = 1,015,562.82

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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.