Finding the Fourth Proportional to 2,138,791.80, 3,208,673.70 and 718,991.40
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Solution
The fourth proportional to 2,138,791.80, 3,208,673.70 and 718,991.40 is: 1,078,650.48
Step by Step Solution
- Step 1: Write the proportion equation
2,138,791.80 : 3,208,673.70 = 718,991.40 : x - Step 2: Convert to fraction form
2,138,791.80/3,208,673.70 = 718,991.40/x - Step 3: Cross multiply
2,138,791.80x = 3,208,673.70 × 718,991.40 - Step 4: Simplify right side
2,138,791.80x = 2,307,008,795,706.18 - Step 5: Solve for x
x = 2,307,008,795,706.18/2,138,791.80 - Step 6: Final answer
x = 1,078,650.48
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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.