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Finding the Fourth Proportional to 550,658.81, 758,493.29 and 389,236.34

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Solution

The fourth proportional to 550,658.81, 758,493.29 and 389,236.34 is: 536,145.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,658.81 : 758,493.29 = 389,236.34 : x
  2. Step 2: Convert to fraction form
    550,658.81/758,493.29 = 389,236.34/x
  3. Step 3: Cross multiply
    550,658.81x = 758,493.29 × 389,236.34
  4. Step 4: Simplify right side
    550,658.81x = 295,233,149,622.23
  5. Step 5: Solve for x
    x = 295,233,149,622.23/550,658.81
  6. Step 6: Final answer
    x = 536,145.33

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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.