Home / 638,297.20-957,445.80-189,087.40

Finding the Fourth Proportional to 638,297.20, 957,445.80 and 189,087.40

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Solution

The fourth proportional to 638,297.20, 957,445.80 and 189,087.40 is: 283,631.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,297.20 : 957,445.80 = 189,087.40 : x
  2. Step 2: Convert to fraction form
    638,297.20/957,445.80 = 189,087.40/x
  3. Step 3: Cross multiply
    638,297.20x = 957,445.80 × 189,087.40
  4. Step 4: Simplify right side
    638,297.20x = 181,040,936,962.92
  5. Step 5: Solve for x
    x = 181,040,936,962.92/638,297.20
  6. Step 6: Final answer
    x = 283,631.10

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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.