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Finding the Fourth Proportional to 493,062.87, 680,210.67 and 289,010.37

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Solution

The fourth proportional to 493,062.87, 680,210.67 and 289,010.37 is: 398,707.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,062.87 : 680,210.67 = 289,010.37 : x
  2. Step 2: Convert to fraction form
    493,062.87/680,210.67 = 289,010.37/x
  3. Step 3: Cross multiply
    493,062.87x = 680,210.67 × 289,010.37
  4. Step 4: Simplify right side
    493,062.87x = 196,587,937,414.65
  5. Step 5: Solve for x
    x = 196,587,937,414.65/493,062.87
  6. Step 6: Final answer
    x = 398,707.65

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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.