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Finding the Fourth Proportional to 1,188,514.80, 1,786,708.80 and 1,015,304.40

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Solution

The fourth proportional to 1,188,514.80, 1,786,708.80 and 1,015,304.40 is: 1,526,319.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,514.80 : 1,786,708.80 = 1,015,304.40 : x
  2. Step 2: Convert to fraction form
    1,188,514.80/1,786,708.80 = 1,015,304.40/x
  3. Step 3: Cross multiply
    1,188,514.80x = 1,786,708.80 × 1,015,304.40
  4. Step 4: Simplify right side
    1,188,514.80x = 1,814,053,306,158.72
  5. Step 5: Solve for x
    x = 1,814,053,306,158.72/1,188,514.80
  6. Step 6: Final answer
    x = 1,526,319.49

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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.