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Finding the Fourth Proportional to 577,071.32, 796,399.66 and 318,942.71

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Solution

The fourth proportional to 577,071.32, 796,399.66 and 318,942.71 is: 440,163.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,071.32 : 796,399.66 = 318,942.71 : x
  2. Step 2: Convert to fraction form
    577,071.32/796,399.66 = 318,942.71/x
  3. Step 3: Cross multiply
    577,071.32x = 796,399.66 × 318,942.71
  4. Step 4: Simplify right side
    577,071.32x = 254,005,866,997.12
  5. Step 5: Solve for x
    x = 254,005,866,997.12/577,071.32
  6. Step 6: Final answer
    x = 440,163.73

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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.