Home / 811,912.63-1,216,913.94-331,844.26

Finding the Fourth Proportional to 811,912.63, 1,216,913.94 and 331,844.26

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Solution

The fourth proportional to 811,912.63, 1,216,913.94 and 331,844.26 is: 497,376.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,912.63 : 1,216,913.94 = 331,844.26 : x
  2. Step 2: Convert to fraction form
    811,912.63/1,216,913.94 = 331,844.26/x
  3. Step 3: Cross multiply
    811,912.63x = 1,216,913.94 × 331,844.26
  4. Step 4: Simplify right side
    811,912.63x = 403,825,905,902.98
  5. Step 5: Solve for x
    x = 403,825,905,902.98/811,912.63
  6. Step 6: Final answer
    x = 497,376.06

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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.