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Finding the Fourth Proportional to 577,091.79, 796,361.96 and 318,955.46

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Solution

The fourth proportional to 577,091.79, 796,361.96 and 318,955.46 is: 440,144.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,091.79 : 796,361.96 = 318,955.46 : x
  2. Step 2: Convert to fraction form
    577,091.79/796,361.96 = 318,955.46/x
  3. Step 3: Cross multiply
    577,091.79x = 796,361.96 × 318,955.46
  4. Step 4: Simplify right side
    577,091.79x = 254,003,992,093.88
  5. Step 5: Solve for x
    x = 254,003,992,093.88/577,091.79
  6. Step 6: Final answer
    x = 440,144.87

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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.