Home / 804,375.20-1,207,000.20-331,108.40

Finding the Fourth Proportional to 804,375.20, 1,207,000.20 and 331,108.40

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Solution

The fourth proportional to 804,375.20, 1,207,000.20 and 331,108.40 is: 496,842.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,375.20 : 1,207,000.20 = 331,108.40 : x
  2. Step 2: Convert to fraction form
    804,375.20/1,207,000.20 = 331,108.40/x
  3. Step 3: Cross multiply
    804,375.20x = 1,207,000.20 × 331,108.40
  4. Step 4: Simplify right side
    804,375.20x = 399,647,905,021.68
  5. Step 5: Solve for x
    x = 399,647,905,021.68/804,375.20
  6. Step 6: Final answer
    x = 496,842.65

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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.