Home / 2,100,445.20-3,150,667.80-978,627.60

Finding the Fourth Proportional to 2,100,445.20, 3,150,667.80 and 978,627.60

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Solution

The fourth proportional to 2,100,445.20, 3,150,667.80 and 978,627.60 is: 1,467,941.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,100,445.20 : 3,150,667.80 = 978,627.60 : x
  2. Step 2: Convert to fraction form
    2,100,445.20/3,150,667.80 = 978,627.60/x
  3. Step 3: Cross multiply
    2,100,445.20x = 3,150,667.80 × 978,627.60
  4. Step 4: Simplify right side
    2,100,445.20x = 3,083,330,467,511.28
  5. Step 5: Solve for x
    x = 3,083,330,467,511.28/2,100,445.20
  6. Step 6: Final answer
    x = 1,467,941.40

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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.