Home / 653,219.10-979,828.74-203,978.43

Finding the Fourth Proportional to 653,219.10, 979,828.74 and 203,978.43

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Solution

The fourth proportional to 653,219.10, 979,828.74 and 203,978.43 is: 305,967.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,219.10 : 979,828.74 = 203,978.43 : x
  2. Step 2: Convert to fraction form
    653,219.10/979,828.74 = 203,978.43/x
  3. Step 3: Cross multiply
    653,219.10x = 979,828.74 × 203,978.43
  4. Step 4: Simplify right side
    653,219.10x = 199,863,928,054.08
  5. Step 5: Solve for x
    x = 199,863,928,054.08/653,219.10
  6. Step 6: Final answer
    x = 305,967.67

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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.