Home / 1,279,209.71-1,765,464.20-728,059.43

Finding the Fourth Proportional to 1,279,209.71, 1,765,464.20 and 728,059.43

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Solution

The fourth proportional to 1,279,209.71, 1,765,464.20 and 728,059.43 is: 1,004,810.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,209.71 : 1,765,464.20 = 728,059.43 : x
  2. Step 2: Convert to fraction form
    1,279,209.71/1,765,464.20 = 728,059.43/x
  3. Step 3: Cross multiply
    1,279,209.71x = 1,765,464.20 × 728,059.43
  4. Step 4: Simplify right side
    1,279,209.71x = 1,285,362,861,770.96
  5. Step 5: Solve for x
    x = 1,285,362,861,770.96/1,279,209.71
  6. Step 6: Final answer
    x = 1,004,810.12

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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.