Finding the Fourth Proportional to 7,242,411.20, 10,863,616.80 and 2,193,721.70
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Solution
The fourth proportional to 7,242,411.20, 10,863,616.80 and 2,193,721.70 is: 3,290,582.55
Step by Step Solution
- Step 1: Write the proportion equation
7,242,411.20 : 10,863,616.80 = 2,193,721.70 : x - Step 2: Convert to fraction form
7,242,411.20/10,863,616.80 = 2,193,721.70/x - Step 3: Cross multiply
7,242,411.20x = 10,863,616.80 × 2,193,721.70 - Step 4: Simplify right side
7,242,411.20x = 23,831,751,914,644.56 - Step 5: Solve for x
x = 23,831,751,914,644.56/7,242,411.20 - Step 6: Final answer
x = 3,290,582.55
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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.