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Finding the Fourth Proportional to 576,966.42, 796,211.64 and 318,836.16

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Solution

The fourth proportional to 576,966.42, 796,211.64 and 318,836.16 is: 439,992.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,966.42 : 796,211.64 = 318,836.16 : x
  2. Step 2: Convert to fraction form
    576,966.42/796,211.64 = 318,836.16/x
  3. Step 3: Cross multiply
    576,966.42x = 796,211.64 × 318,836.16
  4. Step 4: Simplify right side
    576,966.42x = 253,861,061,844.90
  5. Step 5: Solve for x
    x = 253,861,061,844.90/576,966.42
  6. Step 6: Final answer
    x = 439,992.78

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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.