Home / 809,928,252.56-1,215,334,659.48-343,517,128.40

Finding the Fourth Proportional to 809,928,252.56, 1,215,334,659.48 and 343,517,128.40

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Solution

The fourth proportional to 809,928,252.56, 1,215,334,659.48 and 343,517,128.40 is: 515,463,278.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,928,252.56 : 1,215,334,659.48 = 343,517,128.40 : x
  2. Step 2: Convert to fraction form
    809,928,252.56/1,215,334,659.48 = 343,517,128.40/x
  3. Step 3: Cross multiply
    809,928,252.56x = 1,215,334,659.48 × 343,517,128.40
  4. Step 4: Simplify right side
    809,928,252.56x = 417,488,272,269,561,408
  5. Step 5: Solve for x
    x = 417,488,272,269,561,408/809,928,252.56
  6. Step 6: Final answer
    x = 515,463,278.32

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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.