Home / 2,619,133.92-3,928,749.48-821,977.20

Finding the Fourth Proportional to 2,619,133.92, 3,928,749.48 and 821,977.20

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Solution

The fourth proportional to 2,619,133.92, 3,928,749.48 and 821,977.20 is: 1,232,981.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,619,133.92 : 3,928,749.48 = 821,977.20 : x
  2. Step 2: Convert to fraction form
    2,619,133.92/3,928,749.48 = 821,977.20/x
  3. Step 3: Cross multiply
    2,619,133.92x = 3,928,749.48 × 821,977.20
  4. Step 4: Simplify right side
    2,619,133.92x = 3,229,342,497,071.86
  5. Step 5: Solve for x
    x = 3,229,342,497,071.86/2,619,133.92
  6. Step 6: Final answer
    x = 1,232,981.05

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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.