Home / 770,758.20-1,156,137.30-209,791.80

Finding the Fourth Proportional to 770,758.20, 1,156,137.30 and 209,791.80

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Solution

The fourth proportional to 770,758.20, 1,156,137.30 and 209,791.80 is: 314,687.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,758.20 : 1,156,137.30 = 209,791.80 : x
  2. Step 2: Convert to fraction form
    770,758.20/1,156,137.30 = 209,791.80/x
  3. Step 3: Cross multiply
    770,758.20x = 1,156,137.30 × 209,791.80
  4. Step 4: Simplify right side
    770,758.20x = 242,548,125,214.14
  5. Step 5: Solve for x
    x = 242,548,125,214.14/770,758.20
  6. Step 6: Final answer
    x = 314,687.70

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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.