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Finding the Fourth Proportional to 647,713.26, 893,855.79 and 361,202.58

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Solution

The fourth proportional to 647,713.26, 893,855.79 and 361,202.58 is: 498,465.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,713.26 : 893,855.79 = 361,202.58 : x
  2. Step 2: Convert to fraction form
    647,713.26/893,855.79 = 361,202.58/x
  3. Step 3: Cross multiply
    647,713.26x = 893,855.79 × 361,202.58
  4. Step 4: Simplify right side
    647,713.26x = 322,863,017,495.94
  5. Step 5: Solve for x
    x = 322,863,017,495.94/647,713.26
  6. Step 6: Final answer
    x = 498,465.97

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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.