Home / 1,247,665.90-1,867,999.65-1,212,673.90

Finding the Fourth Proportional to 1,247,665.90, 1,867,999.65 and 1,212,673.90

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Solution

The fourth proportional to 1,247,665.90, 1,867,999.65 and 1,212,673.90 is: 1,815,609.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,665.90 : 1,867,999.65 = 1,212,673.90 : x
  2. Step 2: Convert to fraction form
    1,247,665.90/1,867,999.65 = 1,212,673.90/x
  3. Step 3: Cross multiply
    1,247,665.90x = 1,867,999.65 × 1,212,673.90
  4. Step 4: Simplify right side
    1,247,665.90x = 2,265,274,420,764.13
  5. Step 5: Solve for x
    x = 2,265,274,420,764.13/1,247,665.90
  6. Step 6: Final answer
    x = 1,815,609.79

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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.