Home / 811,008.22-1,216,235.52-331,161.28

Finding the Fourth Proportional to 811,008.22, 1,216,235.52 and 331,161.28

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Solution

The fourth proportional to 811,008.22, 1,216,235.52 and 331,161.28 is: 496,628.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,008.22 : 1,216,235.52 = 331,161.28 : x
  2. Step 2: Convert to fraction form
    811,008.22/1,216,235.52 = 331,161.28/x
  3. Step 3: Cross multiply
    811,008.22x = 1,216,235.52 × 331,161.28
  4. Step 4: Simplify right side
    811,008.22x = 402,770,111,584.67
  5. Step 5: Solve for x
    x = 402,770,111,584.67/811,008.22
  6. Step 6: Final answer
    x = 496,628.89

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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.