Home / 815,236.30-1,227,736.80-742,513.69

Finding the Fourth Proportional to 815,236.30, 1,227,736.80 and 742,513.69

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Solution

The fourth proportional to 815,236.30, 1,227,736.80 and 742,513.69 is: 1,118,217.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,236.30 : 1,227,736.80 = 742,513.69 : x
  2. Step 2: Convert to fraction form
    815,236.30/1,227,736.80 = 742,513.69/x
  3. Step 3: Cross multiply
    815,236.30x = 1,227,736.80 × 742,513.69
  4. Step 4: Simplify right side
    815,236.30x = 911,611,381,716.79
  5. Step 5: Solve for x
    x = 911,611,381,716.79/815,236.30
  6. Step 6: Final answer
    x = 1,118,217.36

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.