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Finding the Fourth Proportional to 778,754.80, 1,167,476.10 and 404,777.80

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Solution

The fourth proportional to 778,754.80, 1,167,476.10 and 404,777.80 is: 606,825.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,754.80 : 1,167,476.10 = 404,777.80 : x
  2. Step 2: Convert to fraction form
    778,754.80/1,167,476.10 = 404,777.80/x
  3. Step 3: Cross multiply
    778,754.80x = 1,167,476.10 × 404,777.80
  4. Step 4: Simplify right side
    778,754.80x = 472,568,407,310.58
  5. Step 5: Solve for x
    x = 472,568,407,310.58/778,754.80
  6. Step 6: Final answer
    x = 606,825.68

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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.