Home / 728,173.13-1,004,912.96-405,885.58

Finding the Fourth Proportional to 728,173.13, 1,004,912.96 and 405,885.58

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Solution

The fourth proportional to 728,173.13, 1,004,912.96 and 405,885.58 is: 560,141.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,173.13 : 1,004,912.96 = 405,885.58 : x
  2. Step 2: Convert to fraction form
    728,173.13/1,004,912.96 = 405,885.58/x
  3. Step 3: Cross multiply
    728,173.13x = 1,004,912.96 × 405,885.58
  4. Step 4: Simplify right side
    728,173.13x = 407,879,675,077.41
  5. Step 5: Solve for x
    x = 407,879,675,077.41/728,173.13
  6. Step 6: Final answer
    x = 560,141.07

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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.