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Finding the Fourth Proportional to 576,996.85, 796,213.93 and 318,870.72

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Solution

The fourth proportional to 576,996.85, 796,213.93 and 318,870.72 is: 440,018.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,996.85 : 796,213.93 = 318,870.72 : x
  2. Step 2: Convert to fraction form
    576,996.85/796,213.93 = 318,870.72/x
  3. Step 3: Cross multiply
    576,996.85x = 796,213.93 × 318,870.72
  4. Step 4: Simplify right side
    576,996.85x = 253,889,309,133.13
  5. Step 5: Solve for x
    x = 253,889,309,133.13/576,996.85
  6. Step 6: Final answer
    x = 440,018.54

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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.