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Finding the Fourth Proportional to 647,768.84, 893,922.36 and 361,281.56

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Solution

The fourth proportional to 647,768.84, 893,922.36 and 361,281.56 is: 498,569.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,768.84 : 893,922.36 = 361,281.56 : x
  2. Step 2: Convert to fraction form
    647,768.84/893,922.36 = 361,281.56/x
  3. Step 3: Cross multiply
    647,768.84x = 893,922.36 × 361,281.56
  4. Step 4: Simplify right side
    647,768.84x = 322,957,664,739.68
  5. Step 5: Solve for x
    x = 322,957,664,739.68/647,768.84
  6. Step 6: Final answer
    x = 498,569.31

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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.