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Finding the Fourth Proportional to 774,676.80, 1,162,015.20 and 275,860.80

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Solution

The fourth proportional to 774,676.80, 1,162,015.20 and 275,860.80 is: 413,791.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    774,676.80 : 1,162,015.20 = 275,860.80 : x
  2. Step 2: Convert to fraction form
    774,676.80/1,162,015.20 = 275,860.80/x
  3. Step 3: Cross multiply
    774,676.80x = 1,162,015.20 × 275,860.80
  4. Step 4: Simplify right side
    774,676.80x = 320,554,442,684.16
  5. Step 5: Solve for x
    x = 320,554,442,684.16/774,676.80
  6. Step 6: Final answer
    x = 413,791.20

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Similar ratio
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1.5x scale

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.