Home / 638,235.20-957,352.80-189,025.40

Finding the Fourth Proportional to 638,235.20, 957,352.80 and 189,025.40

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Solution

The fourth proportional to 638,235.20, 957,352.80 and 189,025.40 is: 283,538.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,235.20 : 957,352.80 = 189,025.40 : x
  2. Step 2: Convert to fraction form
    638,235.20/957,352.80 = 189,025.40/x
  3. Step 3: Cross multiply
    638,235.20x = 957,352.80 × 189,025.40
  4. Step 4: Simplify right side
    638,235.20x = 180,963,995,961.12
  5. Step 5: Solve for x
    x = 180,963,995,961.12/638,235.20
  6. Step 6: Final answer
    x = 283,538.10

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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.