Home / 1,188,163.36-1,639,752.16-678,854.80

Finding the Fourth Proportional to 1,188,163.36, 1,639,752.16 and 678,854.80

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Solution

The fourth proportional to 1,188,163.36, 1,639,752.16 and 678,854.80 is: 936,869.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,163.36 : 1,639,752.16 = 678,854.80 : x
  2. Step 2: Convert to fraction form
    1,188,163.36/1,639,752.16 = 678,854.80/x
  3. Step 3: Cross multiply
    1,188,163.36x = 1,639,752.16 × 678,854.80
  4. Step 4: Simplify right side
    1,188,163.36x = 1,113,153,624,626.37
  5. Step 5: Solve for x
    x = 1,113,153,624,626.37/1,188,163.36
  6. Step 6: Final answer
    x = 936,869.17

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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.