Home / 926,979.60-1,390,469.40-394,366.80

Finding the Fourth Proportional to 926,979.60, 1,390,469.40 and 394,366.80

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Solution

The fourth proportional to 926,979.60, 1,390,469.40 and 394,366.80 is: 591,550.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,979.60 : 1,390,469.40 = 394,366.80 : x
  2. Step 2: Convert to fraction form
    926,979.60/1,390,469.40 = 394,366.80/x
  3. Step 3: Cross multiply
    926,979.60x = 1,390,469.40 × 394,366.80
  4. Step 4: Simplify right side
    926,979.60x = 548,354,967,775.92
  5. Step 5: Solve for x
    x = 548,354,967,775.92/926,979.60
  6. Step 6: Final answer
    x = 591,550.20

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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.