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Finding the Fourth Proportional to 808,994.88, 1,213,634.88 and 276,390.72

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Solution

The fourth proportional to 808,994.88, 1,213,634.88 and 276,390.72 is: 414,634.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,994.88 : 1,213,634.88 = 276,390.72 : x
  2. Step 2: Convert to fraction form
    808,994.88/1,213,634.88 = 276,390.72/x
  3. Step 3: Cross multiply
    808,994.88x = 1,213,634.88 × 276,390.72
  4. Step 4: Simplify right side
    808,994.88x = 335,437,418,300.31
  5. Step 5: Solve for x
    x = 335,437,418,300.31/808,994.88
  6. Step 6: Final answer
    x = 414,634.79

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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.