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Finding the Fourth Proportional to 576,734.70, 795,891.26 and 318,611.72

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Solution

The fourth proportional to 576,734.70, 795,891.26 and 318,611.72 is: 439,682.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,734.70 : 795,891.26 = 318,611.72 : x
  2. Step 2: Convert to fraction form
    576,734.70/795,891.26 = 318,611.72/x
  3. Step 3: Cross multiply
    576,734.70x = 795,891.26 × 318,611.72
  4. Step 4: Simplify right side
    576,734.70x = 253,580,283,281.57
  5. Step 5: Solve for x
    x = 253,580,283,281.57/576,734.70
  6. Step 6: Final answer
    x = 439,682.72

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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.