Finding the Fourth Proportional to 1,988,751.15, 2,743,304.36 and 1,407,320.19
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Solution
The fourth proportional to 1,988,751.15, 2,743,304.36 and 1,407,320.19 is: 1,941,272.34
Step by Step Solution
- Step 1: Write the proportion equation
1,988,751.15 : 2,743,304.36 = 1,407,320.19 : x - Step 2: Convert to fraction form
1,988,751.15/2,743,304.36 = 1,407,320.19/x - Step 3: Cross multiply
1,988,751.15x = 2,743,304.36 × 1,407,320.19 - Step 4: Simplify right side
1,988,751.15x = 3,860,707,606,106.43 - Step 5: Solve for x
x = 3,860,707,606,106.43/1,988,751.15 - Step 6: Final answer
x = 1,941,272.34
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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.