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Finding the Fourth Proportional to 577,076.43, 796,406.70 and 318,947.83

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Solution

The fourth proportional to 577,076.43, 796,406.70 and 318,947.83 is: 440,170.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,076.43 : 796,406.70 = 318,947.83 : x
  2. Step 2: Convert to fraction form
    577,076.43/796,406.70 = 318,947.83/x
  3. Step 3: Cross multiply
    577,076.43x = 796,406.70 × 318,947.83
  4. Step 4: Simplify right side
    577,076.43x = 254,012,187,967.50
  5. Step 5: Solve for x
    x = 254,012,187,967.50/577,076.43
  6. Step 6: Final answer
    x = 440,170.79

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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.