Home / 1,276,356.80-1,912,785.60-1,040,160.80

Finding the Fourth Proportional to 1,276,356.80, 1,912,785.60 and 1,040,160.80

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Solution

The fourth proportional to 1,276,356.80, 1,912,785.60 and 1,040,160.80 is: 1,558,815.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,356.80 : 1,912,785.60 = 1,040,160.80 : x
  2. Step 2: Convert to fraction form
    1,276,356.80/1,912,785.60 = 1,040,160.80/x
  3. Step 3: Cross multiply
    1,276,356.80x = 1,912,785.60 × 1,040,160.80
  4. Step 4: Simplify right side
    1,276,356.80x = 1,989,604,599,924.48
  5. Step 5: Solve for x
    x = 1,989,604,599,924.48/1,276,356.80
  6. Step 6: Final answer
    x = 1,558,815.37

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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.