Home / 726,350.40-1,089,525.60-411,422.40

Finding the Fourth Proportional to 726,350.40, 1,089,525.60 and 411,422.40

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Solution

The fourth proportional to 726,350.40, 1,089,525.60 and 411,422.40 is: 617,133.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,350.40 : 1,089,525.60 = 411,422.40 : x
  2. Step 2: Convert to fraction form
    726,350.40/1,089,525.60 = 411,422.40/x
  3. Step 3: Cross multiply
    726,350.40x = 1,089,525.60 × 411,422.40
  4. Step 4: Simplify right side
    726,350.40x = 448,255,237,213.44
  5. Step 5: Solve for x
    x = 448,255,237,213.44/726,350.40
  6. Step 6: Final answer
    x = 617,133.60

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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.