Home / 680,490.90-1,020,738.74-200,724.61

Finding the Fourth Proportional to 680,490.90, 1,020,738.74 and 200,724.61

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Solution

The fourth proportional to 680,490.90, 1,020,738.74 and 200,724.61 is: 301,087.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,490.90 : 1,020,738.74 = 200,724.61 : x
  2. Step 2: Convert to fraction form
    680,490.90/1,020,738.74 = 200,724.61/x
  3. Step 3: Cross multiply
    680,490.90x = 1,020,738.74 × 200,724.61
  4. Step 4: Simplify right side
    680,490.90x = 204,887,381,550.52
  5. Step 5: Solve for x
    x = 204,887,381,550.52/680,490.90
  6. Step 6: Final answer
    x = 301,087.62

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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.