Home / 769,969.18-1,155,150.87-320,540.68

Finding the Fourth Proportional to 769,969.18, 1,155,150.87 and 320,540.68

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Solution

The fourth proportional to 769,969.18, 1,155,150.87 and 320,540.68 is: 480,893.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,969.18 : 1,155,150.87 = 320,540.68 : x
  2. Step 2: Convert to fraction form
    769,969.18/1,155,150.87 = 320,540.68/x
  3. Step 3: Cross multiply
    769,969.18x = 1,155,150.87 × 320,540.68
  4. Step 4: Simplify right side
    769,969.18x = 370,272,845,372.39
  5. Step 5: Solve for x
    x = 370,272,845,372.39/769,969.18
  6. Step 6: Final answer
    x = 480,893.07

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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.