Home / 854,120.33-1,178,629.89-491,485.66

Finding the Fourth Proportional to 854,120.33, 1,178,629.89 and 491,485.66

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Solution

The fourth proportional to 854,120.33, 1,178,629.89 and 491,485.66 is: 678,217.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    854,120.33 : 1,178,629.89 = 491,485.66 : x
  2. Step 2: Convert to fraction form
    854,120.33/1,178,629.89 = 491,485.66/x
  3. Step 3: Cross multiply
    854,120.33x = 1,178,629.89 × 491,485.66
  4. Step 4: Simplify right side
    854,120.33x = 579,279,684,592.73
  5. Step 5: Solve for x
    x = 579,279,684,592.73/854,120.33
  6. Step 6: Final answer
    x = 678,217.89

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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.