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Finding the Fourth Proportional to 980,376.42, 1,471,824 and 755,879.46

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Solution

The fourth proportional to 980,376.42, 1,471,824 and 755,879.46 is: 1,134,790.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    980,376.42 : 1,471,824 = 755,879.46 : x
  2. Step 2: Convert to fraction form
    980,376.42/1,471,824 = 755,879.46/x
  3. Step 3: Cross multiply
    980,376.42x = 1,471,824 × 755,879.46
  4. Step 4: Simplify right side
    980,376.42x = 1,112,521,530,335.04
  5. Step 5: Solve for x
    x = 1,112,521,530,335.04/980,376.42
  6. Step 6: Final answer
    x = 1,134,790.18

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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.