Home / 1,290,947.82-1,781,571.06-717,975.72

Finding the Fourth Proportional to 1,290,947.82, 1,781,571.06 and 717,975.72

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Solution

The fourth proportional to 1,290,947.82, 1,781,571.06 and 717,975.72 is: 990,841.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,947.82 : 1,781,571.06 = 717,975.72 : x
  2. Step 2: Convert to fraction form
    1,290,947.82/1,781,571.06 = 717,975.72/x
  3. Step 3: Cross multiply
    1,290,947.82x = 1,781,571.06 × 717,975.72
  4. Step 4: Simplify right side
    1,290,947.82x = 1,279,124,764,534.66
  5. Step 5: Solve for x
    x = 1,279,124,764,534.66/1,290,947.82
  6. Step 6: Final answer
    x = 990,841.57

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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.