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Finding the Fourth Proportional to 577,074.36, 796,403.82 and 318,945.78

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Solution

The fourth proportional to 577,074.36, 796,403.82 and 318,945.78 is: 440,167.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,074.36 : 796,403.82 = 318,945.78 : x
  2. Step 2: Convert to fraction form
    577,074.36/796,403.82 = 318,945.78/x
  3. Step 3: Cross multiply
    577,074.36x = 796,403.82 × 318,945.78
  4. Step 4: Simplify right side
    577,074.36x = 254,009,637,564.88
  5. Step 5: Solve for x
    x = 254,009,637,564.88/577,074.36
  6. Step 6: Final answer
    x = 440,167.95

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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.