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Finding the Fourth Proportional to 577,071, 796,399.21 and 318,942.39

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Solution

The fourth proportional to 577,071, 796,399.21 and 318,942.39 is: 440,163.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,071 : 796,399.21 = 318,942.39 : x
  2. Step 2: Convert to fraction form
    577,071/796,399.21 = 318,942.39/x
  3. Step 3: Cross multiply
    577,071x = 796,399.21 × 318,942.39
  4. Step 4: Simplify right side
    577,071x = 254,005,471,215.37
  5. Step 5: Solve for x
    x = 254,005,471,215.37/577,071
  6. Step 6: Final answer
    x = 440,163.29

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1.5x scale

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.