Home / 726,080.40-1,089,120.60-460,141.20

Finding the Fourth Proportional to 726,080.40, 1,089,120.60 and 460,141.20

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Solution

The fourth proportional to 726,080.40, 1,089,120.60 and 460,141.20 is: 690,211.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,080.40 : 1,089,120.60 = 460,141.20 : x
  2. Step 2: Convert to fraction form
    726,080.40/1,089,120.60 = 460,141.20/x
  3. Step 3: Cross multiply
    726,080.40x = 1,089,120.60 × 460,141.20
  4. Step 4: Simplify right side
    726,080.40x = 501,149,259,828.72
  5. Step 5: Solve for x
    x = 501,149,259,828.72/726,080.40
  6. Step 6: Final answer
    x = 690,211.80

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Double scale
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Similar ratio
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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.