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Finding the Fourth Proportional to 550,744.88, 758,611.78 and 389,322.32

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Solution

The fourth proportional to 550,744.88, 758,611.78 and 389,322.32 is: 536,263.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,744.88 : 758,611.78 = 389,322.32 : x
  2. Step 2: Convert to fraction form
    550,744.88/758,611.78 = 389,322.32/x
  3. Step 3: Cross multiply
    550,744.88x = 758,611.78 × 389,322.32
  4. Step 4: Simplify right side
    550,744.88x = 295,344,498,168.93
  5. Step 5: Solve for x
    x = 295,344,498,168.93/550,744.88
  6. Step 6: Final answer
    x = 536,263.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.