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Finding the Fourth Proportional to 455,537.30, 682,321.80 and 376,805.30

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Solution

The fourth proportional to 455,537.30, 682,321.80 and 376,805.30 is: 564,393.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,537.30 : 682,321.80 = 376,805.30 : x
  2. Step 2: Convert to fraction form
    455,537.30/682,321.80 = 376,805.30/x
  3. Step 3: Cross multiply
    455,537.30x = 682,321.80 × 376,805.30
  4. Step 4: Simplify right side
    455,537.30x = 257,102,470,545.54
  5. Step 5: Solve for x
    x = 257,102,470,545.54/455,537.30
  6. Step 6: Final answer
    x = 564,393.89

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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.