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Finding the Fourth Proportional to 680,236.80, 1,020,372 and 325,288.32

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Solution

The fourth proportional to 680,236.80, 1,020,372 and 325,288.32 is: 487,940.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,236.80 : 1,020,372 = 325,288.32 : x
  2. Step 2: Convert to fraction form
    680,236.80/1,020,372 = 325,288.32/x
  3. Step 3: Cross multiply
    680,236.80x = 1,020,372 × 325,288.32
  4. Step 4: Simplify right side
    680,236.80x = 331,915,093,655.04
  5. Step 5: Solve for x
    x = 331,915,093,655.04/680,236.80
  6. Step 6: Final answer
    x = 487,940.51

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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.