Home / 811,911.63-1,216,912.46-331,843.26

Finding the Fourth Proportional to 811,911.63, 1,216,912.46 and 331,843.26

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Solution

The fourth proportional to 811,911.63, 1,216,912.46 and 331,843.26 is: 497,374.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,911.63 : 1,216,912.46 = 331,843.26 : x
  2. Step 2: Convert to fraction form
    811,911.63/1,216,912.46 = 331,843.26/x
  3. Step 3: Cross multiply
    811,911.63x = 1,216,912.46 × 331,843.26
  4. Step 4: Simplify right side
    811,911.63x = 403,824,196,201.80
  5. Step 5: Solve for x
    x = 403,824,196,201.80/811,911.63
  6. Step 6: Final answer
    x = 497,374.57

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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.