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Finding the Fourth Proportional to 576,829.12, 796,040.23 and 318,722.69

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Solution

The fourth proportional to 576,829.12, 796,040.23 and 318,722.69 is: 439,846.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,829.12 : 796,040.23 = 318,722.69 : x
  2. Step 2: Convert to fraction form
    576,829.12/796,040.23 = 318,722.69/x
  3. Step 3: Cross multiply
    576,829.12x = 796,040.23 × 318,722.69
  4. Step 4: Simplify right side
    576,829.12x = 253,716,083,453.82
  5. Step 5: Solve for x
    x = 253,716,083,453.82/576,829.12
  6. Step 6: Final answer
    x = 439,846.18

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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.