Home / 1,239,339.56-1,858,970.46-681,878.12

Finding the Fourth Proportional to 1,239,339.56, 1,858,970.46 and 681,878.12

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Solution

The fourth proportional to 1,239,339.56, 1,858,970.46 and 681,878.12 is: 1,022,795.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239,339.56 : 1,858,970.46 = 681,878.12 : x
  2. Step 2: Convert to fraction form
    1,239,339.56/1,858,970.46 = 681,878.12/x
  3. Step 3: Cross multiply
    1,239,339.56x = 1,858,970.46 × 681,878.12
  4. Step 4: Simplify right side
    1,239,339.56x = 1,267,591,282,400.34
  5. Step 5: Solve for x
    x = 1,267,591,282,400.34/1,239,339.56
  6. Step 6: Final answer
    x = 1,022,795.79

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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.