Home / 1,230,978.26-1,699,033.42-721,844.66

Finding the Fourth Proportional to 1,230,978.26, 1,699,033.42 and 721,844.66

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Solution

The fourth proportional to 1,230,978.26, 1,699,033.42 and 721,844.66 is: 996,311.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230,978.26 : 1,699,033.42 = 721,844.66 : x
  2. Step 2: Convert to fraction form
    1,230,978.26/1,699,033.42 = 721,844.66/x
  3. Step 3: Cross multiply
    1,230,978.26x = 1,699,033.42 × 721,844.66
  4. Step 4: Simplify right side
    1,230,978.26x = 1,226,438,201,388.54
  5. Step 5: Solve for x
    x = 1,226,438,201,388.54/1,230,978.26
  6. Step 6: Final answer
    x = 996,311.83

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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.