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Finding the Fourth Proportional to 550,747.88, 758,615.92 and 389,325.32

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Solution

The fourth proportional to 550,747.88, 758,615.92 and 389,325.32 is: 536,267.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,747.88 : 758,615.92 = 389,325.32 : x
  2. Step 2: Convert to fraction form
    550,747.88/758,615.92 = 389,325.32/x
  3. Step 3: Cross multiply
    550,747.88x = 758,615.92 × 389,325.32
  4. Step 4: Simplify right side
    550,747.88x = 295,348,385,811.09
  5. Step 5: Solve for x
    x = 295,348,385,811.09/550,747.88
  6. Step 6: Final answer
    x = 536,267.86

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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.