Home / 455,815.98-683,516.07-189,417.78

Finding the Fourth Proportional to 455,815.98, 683,516.07 and 189,417.78

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Solution

The fourth proportional to 455,815.98, 683,516.07 and 189,417.78 is: 284,040.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,815.98 : 683,516.07 = 189,417.78 : x
  2. Step 2: Convert to fraction form
    455,815.98/683,516.07 = 189,417.78/x
  3. Step 3: Cross multiply
    455,815.98x = 683,516.07 × 189,417.78
  4. Step 4: Simplify right side
    455,815.98x = 129,470,096,573.73
  5. Step 5: Solve for x
    x = 129,470,096,573.73/455,815.98
  6. Step 6: Final answer
    x = 284,040.28

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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.