Finding the Fourth Proportional to 1,362,853.12, 1,879,708.80 and 1,282,489.60
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Solution
The fourth proportional to 1,362,853.12, 1,879,708.80 and 1,282,489.60 is: 1,768,867.79
Step by Step Solution
- Step 1: Write the proportion equation
1,362,853.12 : 1,879,708.80 = 1,282,489.60 : x - Step 2: Convert to fraction form
1,362,853.12/1,879,708.80 = 1,282,489.60/x - Step 3: Cross multiply
1,362,853.12x = 1,879,708.80 × 1,282,489.60 - Step 4: Simplify right side
1,362,853.12x = 2,410,706,987,028.48 - Step 5: Solve for x
x = 2,410,706,987,028.48/1,362,853.12 - Step 6: Final answer
x = 1,768,867.79
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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.