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Finding the Fourth Proportional to 577,078.11, 796,409.01 and 318,949.54

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Solution

The fourth proportional to 577,078.11, 796,409.01 and 318,949.54 is: 440,173.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,078.11 : 796,409.01 = 318,949.54 : x
  2. Step 2: Convert to fraction form
    577,078.11/796,409.01 = 318,949.54/x
  3. Step 3: Cross multiply
    577,078.11x = 796,409.01 × 318,949.54
  4. Step 4: Simplify right side
    577,078.11x = 254,014,287,391.36
  5. Step 5: Solve for x
    x = 254,014,287,391.36/577,078.11
  6. Step 6: Final answer
    x = 440,173.15

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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.