Home / 2,639,388.47-3,959,151.90-842,270.21

Finding the Fourth Proportional to 2,639,388.47, 3,959,151.90 and 842,270.21

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Solution

The fourth proportional to 2,639,388.47, 3,959,151.90 and 842,270.21 is: 1,263,427.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639,388.47 : 3,959,151.90 = 842,270.21 : x
  2. Step 2: Convert to fraction form
    2,639,388.47/3,959,151.90 = 842,270.21/x
  3. Step 3: Cross multiply
    2,639,388.47x = 3,959,151.90 × 842,270.21
  4. Step 4: Simplify right side
    2,639,388.47x = 3,334,675,708,919.66
  5. Step 5: Solve for x
    x = 3,334,675,708,919.66/2,639,388.47
  6. Step 6: Final answer
    x = 1,263,427.40

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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.