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Finding the Fourth Proportional to 994,879.20, 1,491,771.60 and 679,692

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Solution

The fourth proportional to 994,879.20, 1,491,771.60 and 679,692 is: 1,019,164.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    994,879.20 : 1,491,771.60 = 679,692 : x
  2. Step 2: Convert to fraction form
    994,879.20/1,491,771.60 = 679,692/x
  3. Step 3: Cross multiply
    994,879.20x = 1,491,771.60 × 679,692
  4. Step 4: Simplify right side
    994,879.20x = 1,013,945,222,347.20
  5. Step 5: Solve for x
    x = 1,013,945,222,347.20/994,879.20
  6. Step 6: Final answer
    x = 1,019,164.16

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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.