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Finding the Fourth Proportional to 739,248, 1,108,704.78 and 339,504.50

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Solution

The fourth proportional to 739,248, 1,108,704.78 and 339,504.50 is: 509,179.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,248 : 1,108,704.78 = 339,504.50 : x
  2. Step 2: Convert to fraction form
    739,248/1,108,704.78 = 339,504.50/x
  3. Step 3: Cross multiply
    739,248x = 1,108,704.78 × 339,504.50
  4. Step 4: Simplify right side
    739,248x = 376,410,261,981.51
  5. Step 5: Solve for x
    x = 376,410,261,981.51/739,248
  6. Step 6: Final answer
    x = 509,179.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.