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Finding the Fourth Proportional to 652,679.67, 979,219.94 and 311,558.39

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Solution

The fourth proportional to 652,679.67, 979,219.94 and 311,558.39 is: 467,433.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,679.67 : 979,219.94 = 311,558.39 : x
  2. Step 2: Convert to fraction form
    652,679.67/979,219.94 = 311,558.39/x
  3. Step 3: Cross multiply
    652,679.67x = 979,219.94 × 311,558.39
  4. Step 4: Simplify right side
    652,679.67x = 305,084,182,676.75
  5. Step 5: Solve for x
    x = 305,084,182,676.75/652,679.67
  6. Step 6: Final answer
    x = 467,433.25

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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.