Home / 726,190.20-1,089,285.30-459,084.60

Finding the Fourth Proportional to 726,190.20, 1,089,285.30 and 459,084.60

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Solution

The fourth proportional to 726,190.20, 1,089,285.30 and 459,084.60 is: 688,626.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,190.20 : 1,089,285.30 = 459,084.60 : x
  2. Step 2: Convert to fraction form
    726,190.20/1,089,285.30 = 459,084.60/x
  3. Step 3: Cross multiply
    726,190.20x = 1,089,285.30 × 459,084.60
  4. Step 4: Simplify right side
    726,190.20x = 500,074,106,236.38
  5. Step 5: Solve for x
    x = 500,074,106,236.38/726,190.20
  6. Step 6: Final answer
    x = 688,626.90

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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.