Home / 2,640,130.20-3,960,161.85-842,990.88

Finding the Fourth Proportional to 2,640,130.20, 3,960,161.85 and 842,990.88

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Solution

The fourth proportional to 2,640,130.20, 3,960,161.85 and 842,990.88 is: 1,264,475.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,640,130.20 : 3,960,161.85 = 842,990.88 : x
  2. Step 2: Convert to fraction form
    2,640,130.20/3,960,161.85 = 842,990.88/x
  3. Step 3: Cross multiply
    2,640,130.20x = 3,960,161.85 × 842,990.88
  4. Step 4: Simplify right side
    2,640,130.20x = 3,338,380,322,873.93
  5. Step 5: Solve for x
    x = 3,338,380,322,873.93/2,640,130.20
  6. Step 6: Final answer
    x = 1,264,475.64

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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.