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Finding the Fourth Proportional to 577,278.95, 796,610.64 and 319,140.44

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Solution

The fourth proportional to 577,278.95, 796,610.64 and 319,140.44 is: 440,394.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,278.95 : 796,610.64 = 319,140.44 : x
  2. Step 2: Convert to fraction form
    577,278.95/796,610.64 = 319,140.44/x
  3. Step 3: Cross multiply
    577,278.95x = 796,610.64 × 319,140.44
  4. Step 4: Simplify right side
    577,278.95x = 254,230,667,190.35
  5. Step 5: Solve for x
    x = 254,230,667,190.35/577,278.95
  6. Step 6: Final answer
    x = 440,394.83

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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.