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Finding the Fourth Proportional to 986,502.80, 1,479,754.20 and 276,651.20

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Solution

The fourth proportional to 986,502.80, 1,479,754.20 and 276,651.20 is: 414,976.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,502.80 : 1,479,754.20 = 276,651.20 : x
  2. Step 2: Convert to fraction form
    986,502.80/1,479,754.20 = 276,651.20/x
  3. Step 3: Cross multiply
    986,502.80x = 1,479,754.20 × 276,651.20
  4. Step 4: Simplify right side
    986,502.80x = 409,375,775,135.04
  5. Step 5: Solve for x
    x = 409,375,775,135.04/986,502.80
  6. Step 6: Final answer
    x = 414,976.80

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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.