Home / 1,117,788.72-1,542,309.24-664,991.28

Finding the Fourth Proportional to 1,117,788.72, 1,542,309.24 and 664,991.28

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Solution

The fourth proportional to 1,117,788.72, 1,542,309.24 and 664,991.28 is: 917,545.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,117,788.72 : 1,542,309.24 = 664,991.28 : x
  2. Step 2: Convert to fraction form
    1,117,788.72/1,542,309.24 = 664,991.28/x
  3. Step 3: Cross multiply
    1,117,788.72x = 1,542,309.24 × 664,991.28
  4. Step 4: Simplify right side
    1,117,788.72x = 1,025,622,195,663.43
  5. Step 5: Solve for x
    x = 1,025,622,195,663.43/1,117,788.72
  6. Step 6: Final answer
    x = 917,545.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.