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Finding the Fourth Proportional to 804,247.20, 1,206,808.20 and 330,980.40

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Solution

The fourth proportional to 804,247.20, 1,206,808.20 and 330,980.40 is: 496,650.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,247.20 : 1,206,808.20 = 330,980.40 : x
  2. Step 2: Convert to fraction form
    804,247.20/1,206,808.20 = 330,980.40/x
  3. Step 3: Cross multiply
    804,247.20x = 1,206,808.20 × 330,980.40
  4. Step 4: Simplify right side
    804,247.20x = 399,429,860,759.28
  5. Step 5: Solve for x
    x = 399,429,860,759.28/804,247.20
  6. Step 6: Final answer
    x = 496,650.61

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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.