Home / 693,360.40-1,040,040.60-320,112.40

Finding the Fourth Proportional to 693,360.40, 1,040,040.60 and 320,112.40

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Solution

The fourth proportional to 693,360.40, 1,040,040.60 and 320,112.40 is: 480,168.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,360.40 : 1,040,040.60 = 320,112.40 : x
  2. Step 2: Convert to fraction form
    693,360.40/1,040,040.60 = 320,112.40/x
  3. Step 3: Cross multiply
    693,360.40x = 1,040,040.60 × 320,112.40
  4. Step 4: Simplify right side
    693,360.40x = 332,929,892,563.44
  5. Step 5: Solve for x
    x = 332,929,892,563.44/693,360.40
  6. Step 6: Final answer
    x = 480,168.60

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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.