Home / 815,235.30-1,227,735.29-742,512.69

Finding the Fourth Proportional to 815,235.30, 1,227,735.29 and 742,512.69

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Solution

The fourth proportional to 815,235.30, 1,227,735.29 and 742,512.69 is: 1,118,215.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,235.30 : 1,227,735.29 = 742,512.69 : x
  2. Step 2: Convert to fraction form
    815,235.30/1,227,735.29 = 742,512.69/x
  3. Step 3: Cross multiply
    815,235.30x = 1,227,735.29 × 742,512.69
  4. Step 4: Simplify right side
    815,235.30x = 911,609,034,642.11
  5. Step 5: Solve for x
    x = 911,609,034,642.11/815,235.30
  6. Step 6: Final answer
    x = 1,118,215.85

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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.