Home / 3,219,863.78-4,829,961.10-823,729.20

Finding the Fourth Proportional to 3,219,863.78, 4,829,961.10 and 823,729.20

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Solution

The fourth proportional to 3,219,863.78, 4,829,961.10 and 823,729.20 is: 1,235,636.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,219,863.78 : 4,829,961.10 = 823,729.20 : x
  2. Step 2: Convert to fraction form
    3,219,863.78/4,829,961.10 = 823,729.20/x
  3. Step 3: Cross multiply
    3,219,863.78x = 4,829,961.10 × 823,729.20
  4. Step 4: Simplify right side
    3,219,863.78x = 3,978,579,992,934.12
  5. Step 5: Solve for x
    x = 3,978,579,992,934.12/3,219,863.78
  6. Step 6: Final answer
    x = 1,235,636.12

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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.