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Finding the Fourth Proportional to 577,079.36, 796,410.72 and 318,950.78

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Solution

The fourth proportional to 577,079.36, 796,410.72 and 318,950.78 is: 440,174.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,079.36 : 796,410.72 = 318,950.78 : x
  2. Step 2: Convert to fraction form
    577,079.36/796,410.72 = 318,950.78/x
  3. Step 3: Cross multiply
    577,079.36x = 796,410.72 × 318,950.78
  4. Step 4: Simplify right side
    577,079.36x = 254,015,820,344.36
  5. Step 5: Solve for x
    x = 254,015,820,344.36/577,079.36
  6. Step 6: Final answer
    x = 440,174.85

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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.