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Finding the Fourth Proportional to 512,820.20, 769,230.30 and 371,102.60

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Solution

The fourth proportional to 512,820.20, 769,230.30 and 371,102.60 is: 556,653.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,820.20 : 769,230.30 = 371,102.60 : x
  2. Step 2: Convert to fraction form
    512,820.20/769,230.30 = 371,102.60/x
  3. Step 3: Cross multiply
    512,820.20x = 769,230.30 × 371,102.60
  4. Step 4: Simplify right side
    512,820.20x = 285,463,364,328.78
  5. Step 5: Solve for x
    x = 285,463,364,328.78/512,820.20
  6. Step 6: Final answer
    x = 556,653.90

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Similar ratio
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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.