Home / 728,116.62-1,004,805.60-405,847.15

Finding the Fourth Proportional to 728,116.62, 1,004,805.60 and 405,847.15

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Solution

The fourth proportional to 728,116.62, 1,004,805.60 and 405,847.15 is: 560,071.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,116.62 : 1,004,805.60 = 405,847.15 : x
  2. Step 2: Convert to fraction form
    728,116.62/1,004,805.60 = 405,847.15/x
  3. Step 3: Cross multiply
    728,116.62x = 1,004,805.60 × 405,847.15
  4. Step 4: Simplify right side
    728,116.62x = 407,797,489,064.04
  5. Step 5: Solve for x
    x = 407,797,489,064.04/728,116.62
  6. Step 6: Final answer
    x = 560,071.67

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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.