Finding the Fourth Proportional to 7,085,023.80, 9,777,647.42 and 3,987,747.78
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Solution
The fourth proportional to 7,085,023.80, 9,777,647.42 and 3,987,747.78 is: 5,503,268.99
Step by Step Solution
- Step 1: Write the proportion equation
7,085,023.80 : 9,777,647.42 = 3,987,747.78 : x - Step 2: Convert to fraction form
7,085,023.80/9,777,647.42 = 3,987,747.78/x - Step 3: Cross multiply
7,085,023.80x = 9,777,647.42 × 3,987,747.78 - Step 4: Simplify right side
7,085,023.80x = 38,990,791,789,792.04 - Step 5: Solve for x
x = 38,990,791,789,792.04/7,085,023.80 - Step 6: Final answer
x = 5,503,268.99
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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.