Home / 693,427.60-1,040,141.40-398,515.60

Finding the Fourth Proportional to 693,427.60, 1,040,141.40 and 398,515.60

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Solution

The fourth proportional to 693,427.60, 1,040,141.40 and 398,515.60 is: 597,773.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,427.60 : 1,040,141.40 = 398,515.60 : x
  2. Step 2: Convert to fraction form
    693,427.60/1,040,141.40 = 398,515.60/x
  3. Step 3: Cross multiply
    693,427.60x = 1,040,141.40 × 398,515.60
  4. Step 4: Simplify right side
    693,427.60x = 414,512,574,105.84
  5. Step 5: Solve for x
    x = 414,512,574,105.84/693,427.60
  6. Step 6: Final answer
    x = 597,773.40

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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.