Home / 628,928.20-943,392.30-418,976.20

Finding the Fourth Proportional to 628,928.20, 943,392.30 and 418,976.20

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Solution

The fourth proportional to 628,928.20, 943,392.30 and 418,976.20 is: 628,464.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,928.20 : 943,392.30 = 418,976.20 : x
  2. Step 2: Convert to fraction form
    628,928.20/943,392.30 = 418,976.20/x
  3. Step 3: Cross multiply
    628,928.20x = 943,392.30 × 418,976.20
  4. Step 4: Simplify right side
    628,928.20x = 395,258,920,963.26
  5. Step 5: Solve for x
    x = 395,258,920,963.26/628,928.20
  6. Step 6: Final answer
    x = 628,464.30

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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.