Finding the Fourth Proportional to 1,117,261.81, 1,542,343.85 and 715,087.09
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Solution
The fourth proportional to 1,117,261.81, 1,542,343.85 and 715,087.09 is: 987,154.64
Step by Step Solution
- Step 1: Write the proportion equation
1,117,261.81 : 1,542,343.85 = 715,087.09 : x - Step 2: Convert to fraction form
1,117,261.81/1,542,343.85 = 715,087.09/x - Step 3: Cross multiply
1,117,261.81x = 1,542,343.85 × 715,087.09 - Step 4: Simplify right side
1,117,261.81x = 1,102,910,175,475.90 - Step 5: Solve for x
x = 1,102,910,175,475.90/1,117,261.81 - Step 6: Final answer
x = 987,154.64
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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.