Home / 807,729.20-1,211,156.40-333,879.20

Finding the Fourth Proportional to 807,729.20, 1,211,156.40 and 333,879.20

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Solution

The fourth proportional to 807,729.20, 1,211,156.40 and 333,879.20 is: 500,638.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,729.20 : 1,211,156.40 = 333,879.20 : x
  2. Step 2: Convert to fraction form
    807,729.20/1,211,156.40 = 333,879.20/x
  3. Step 3: Cross multiply
    807,729.20x = 1,211,156.40 × 333,879.20
  4. Step 4: Simplify right side
    807,729.20x = 404,379,929,906.88
  5. Step 5: Solve for x
    x = 404,379,929,906.88/807,729.20
  6. Step 6: Final answer
    x = 500,638.00

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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.