Finding the Fourth Proportional to 3,994,976.09, 5,513,067.21 and 2,159,428.36
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Solution
The fourth proportional to 3,994,976.09, 5,513,067.21 and 2,159,428.36 is: 2,980,011.24
Step by Step Solution
- Step 1: Write the proportion equation
3,994,976.09 : 5,513,067.21 = 2,159,428.36 : x - Step 2: Convert to fraction form
3,994,976.09/5,513,067.21 = 2,159,428.36/x - Step 3: Cross multiply
3,994,976.09x = 5,513,067.21 × 2,159,428.36 - Step 4: Simplify right side
3,994,976.09x = 11,905,073,676,365.48 - Step 5: Solve for x
x = 11,905,073,676,365.48/3,994,976.09 - Step 6: Final answer
x = 2,980,011.24
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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.