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Finding the Fourth Proportional to 652,690.06, 979,235.54 and 311,568.78

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Solution

The fourth proportional to 652,690.06, 979,235.54 and 311,568.78 is: 467,448.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,690.06 : 979,235.54 = 311,568.78 : x
  2. Step 2: Convert to fraction form
    652,690.06/979,235.54 = 311,568.78/x
  3. Step 3: Cross multiply
    652,690.06x = 979,235.54 × 311,568.78
  4. Step 4: Simplify right side
    652,690.06x = 305,099,222,530.44
  5. Step 5: Solve for x
    x = 305,099,222,530.44/652,690.06
  6. Step 6: Final answer
    x = 467,448.86

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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.