Home / 2,128,345.20-3,192,906.60-866,300.40

Finding the Fourth Proportional to 2,128,345.20, 3,192,906.60 and 866,300.40

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Solution

The fourth proportional to 2,128,345.20, 3,192,906.60 and 866,300.40 is: 1,299,608.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128,345.20 : 3,192,906.60 = 866,300.40 : x
  2. Step 2: Convert to fraction form
    2,128,345.20/3,192,906.60 = 866,300.40/x
  3. Step 3: Cross multiply
    2,128,345.20x = 3,192,906.60 × 866,300.40
  4. Step 4: Simplify right side
    2,128,345.20x = 2,766,016,264,742.64
  5. Step 5: Solve for x
    x = 2,766,016,264,742.64/2,128,345.20
  6. Step 6: Final answer
    x = 1,299,608.85

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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.