Home / 726,489.83-1,089,735.62-347,321.40

Finding the Fourth Proportional to 726,489.83, 1,089,735.62 and 347,321.40

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Solution

The fourth proportional to 726,489.83, 1,089,735.62 and 347,321.40 is: 520,982.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,489.83 : 1,089,735.62 = 347,321.40 : x
  2. Step 2: Convert to fraction form
    726,489.83/1,089,735.62 = 347,321.40/x
  3. Step 3: Cross multiply
    726,489.83x = 1,089,735.62 × 347,321.40
  4. Step 4: Simplify right side
    726,489.83x = 378,488,499,431.66
  5. Step 5: Solve for x
    x = 378,488,499,431.66/726,489.83
  6. Step 6: Final answer
    x = 520,982.52

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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.