Home / 1,188,635.76-1,639,918.44-678,977.28

Finding the Fourth Proportional to 1,188,635.76, 1,639,918.44 and 678,977.28

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Solution

The fourth proportional to 1,188,635.76, 1,639,918.44 and 678,977.28 is: 936,760.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,635.76 : 1,639,918.44 = 678,977.28 : x
  2. Step 2: Convert to fraction form
    1,188,635.76/1,639,918.44 = 678,977.28/x
  3. Step 3: Cross multiply
    1,188,635.76x = 1,639,918.44 × 678,977.28
  4. Step 4: Simplify right side
    1,188,635.76x = 1,113,467,361,813.04
  5. Step 5: Solve for x
    x = 1,113,467,361,813.04/1,188,635.76
  6. Step 6: Final answer
    x = 936,760.78

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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.