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Finding the Fourth Proportional to 769,695.80, 1,154,054.64 and 675,115.88

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Solution

The fourth proportional to 769,695.80, 1,154,054.64 and 675,115.88 is: 1,012,244.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,695.80 : 1,154,054.64 = 675,115.88 : x
  2. Step 2: Convert to fraction form
    769,695.80/1,154,054.64 = 675,115.88/x
  3. Step 3: Cross multiply
    769,695.80x = 1,154,054.64 × 675,115.88
  4. Step 4: Simplify right side
    769,695.80x = 779,120,613,851.68
  5. Step 5: Solve for x
    x = 779,120,613,851.68/769,695.80
  6. Step 6: Final answer
    x = 1,012,244.86

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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.