Home / 769,971.06-1,155,153.42-320,542.56

Finding the Fourth Proportional to 769,971.06, 1,155,153.42 and 320,542.56

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Solution

The fourth proportional to 769,971.06, 1,155,153.42 and 320,542.56 is: 480,895.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,971.06 : 1,155,153.42 = 320,542.56 : x
  2. Step 2: Convert to fraction form
    769,971.06/1,155,153.42 = 320,542.56/x
  3. Step 3: Cross multiply
    769,971.06x = 1,155,153.42 × 320,542.56
  4. Step 4: Simplify right side
    769,971.06x = 370,275,834,439.56
  5. Step 5: Solve for x
    x = 370,275,834,439.56/769,971.06
  6. Step 6: Final answer
    x = 480,895.78

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1.5x scale

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.