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Finding the Fourth Proportional to 854,687.77, 1,179,504.80 and 492,102.61

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Solution

The fourth proportional to 854,687.77, 1,179,504.80 and 492,102.61 is: 679,122.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    854,687.77 : 1,179,504.80 = 492,102.61 : x
  2. Step 2: Convert to fraction form
    854,687.77/1,179,504.80 = 492,102.61/x
  3. Step 3: Cross multiply
    854,687.77x = 1,179,504.80 × 492,102.61
  4. Step 4: Simplify right side
    854,687.77x = 580,437,390,587.53
  5. Step 5: Solve for x
    x = 580,437,390,587.53/854,687.77
  6. Step 6: Final answer
    x = 679,122.14

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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.