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Finding the Fourth Proportional to 576,991.73, 796,206.87 and 318,865.59

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Solution

The fourth proportional to 576,991.73, 796,206.87 and 318,865.59 is: 440,011.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,991.73 : 796,206.87 = 318,865.59 : x
  2. Step 2: Convert to fraction form
    576,991.73/796,206.87 = 318,865.59/x
  3. Step 3: Cross multiply
    576,991.73x = 796,206.87 × 318,865.59
  4. Step 4: Simplify right side
    576,991.73x = 253,882,973,364.60
  5. Step 5: Solve for x
    x = 253,882,973,364.60/576,991.73
  6. Step 6: Final answer
    x = 440,011.46

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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.