Home / 920,112.40-1,380,168.60-289,025.20

Finding the Fourth Proportional to 920,112.40, 1,380,168.60 and 289,025.20

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Solution

The fourth proportional to 920,112.40, 1,380,168.60 and 289,025.20 is: 433,537.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,112.40 : 1,380,168.60 = 289,025.20 : x
  2. Step 2: Convert to fraction form
    920,112.40/1,380,168.60 = 289,025.20/x
  3. Step 3: Cross multiply
    920,112.40x = 1,380,168.60 × 289,025.20
  4. Step 4: Simplify right side
    920,112.40x = 398,903,505,648.72
  5. Step 5: Solve for x
    x = 398,903,505,648.72/920,112.40
  6. Step 6: Final answer
    x = 433,537.80

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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.