Home / 926,872.20-1,390,308.30-394,410.60

Finding the Fourth Proportional to 926,872.20, 1,390,308.30 and 394,410.60

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Solution

The fourth proportional to 926,872.20, 1,390,308.30 and 394,410.60 is: 591,615.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,872.20 : 1,390,308.30 = 394,410.60 : x
  2. Step 2: Convert to fraction form
    926,872.20/1,390,308.30 = 394,410.60/x
  3. Step 3: Cross multiply
    926,872.20x = 1,390,308.30 × 394,410.60
  4. Step 4: Simplify right side
    926,872.20x = 548,352,330,787.98
  5. Step 5: Solve for x
    x = 548,352,330,787.98/926,872.20
  6. Step 6: Final answer
    x = 591,615.90

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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.