Home / 1,205,435.50-1,663,578.75-668,891.50

Finding the Fourth Proportional to 1,205,435.50, 1,663,578.75 and 668,891.50

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Solution

The fourth proportional to 1,205,435.50, 1,663,578.75 and 668,891.50 is: 923,113.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,205,435.50 : 1,663,578.75 = 668,891.50 : x
  2. Step 2: Convert to fraction form
    1,205,435.50/1,663,578.75 = 668,891.50/x
  3. Step 3: Cross multiply
    1,205,435.50x = 1,663,578.75 × 668,891.50
  4. Step 4: Simplify right side
    1,205,435.50x = 1,112,753,685,455.63
  5. Step 5: Solve for x
    x = 1,112,753,685,455.63/1,205,435.50
  6. Step 6: Final answer
    x = 923,113.42

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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.