Home / 699,821.73-965,784.69-393,917.85

Finding the Fourth Proportional to 699,821.73, 965,784.69 and 393,917.85

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Solution

The fourth proportional to 699,821.73, 965,784.69 and 393,917.85 is: 543,623.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,821.73 : 965,784.69 = 393,917.85 : x
  2. Step 2: Convert to fraction form
    699,821.73/965,784.69 = 393,917.85/x
  3. Step 3: Cross multiply
    699,821.73x = 965,784.69 × 393,917.85
  4. Step 4: Simplify right side
    699,821.73x = 380,439,828,647.72
  5. Step 5: Solve for x
    x = 380,439,828,647.72/699,821.73
  6. Step 6: Final answer
    x = 543,623.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.