Home / 653,145.78-979,755.12-203,928.68

Finding the Fourth Proportional to 653,145.78, 979,755.12 and 203,928.68

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Solution

The fourth proportional to 653,145.78, 979,755.12 and 203,928.68 is: 305,904.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,145.78 : 979,755.12 = 203,928.68 : x
  2. Step 2: Convert to fraction form
    653,145.78/979,755.12 = 203,928.68/x
  3. Step 3: Cross multiply
    653,145.78x = 979,755.12 × 203,928.68
  4. Step 4: Simplify right side
    653,145.78x = 199,800,168,344.84
  5. Step 5: Solve for x
    x = 199,800,168,344.84/653,145.78
  6. Step 6: Final answer
    x = 305,904.40

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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.