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Finding the Fourth Proportional to 576,995.85, 796,212.56 and 318,869.72

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Solution

The fourth proportional to 576,995.85, 796,212.56 and 318,869.72 is: 440,017.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,995.85 : 796,212.56 = 318,869.72 : x
  2. Step 2: Convert to fraction form
    576,995.85/796,212.56 = 318,869.72/x
  3. Step 3: Cross multiply
    576,995.85x = 796,212.56 × 318,869.72
  4. Step 4: Simplify right side
    576,995.85x = 253,888,070,492.27
  5. Step 5: Solve for x
    x = 253,888,070,492.27/576,995.85
  6. Step 6: Final answer
    x = 440,017.15

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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.