Finding the Fourth Proportional to 7,868,403.21, 10,859,431.19 and 4,431,316.17
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Solution
The fourth proportional to 7,868,403.21, 10,859,431.19 and 4,431,316.17 is: 6,115,799.07
Step by Step Solution
- Step 1: Write the proportion equation
7,868,403.21 : 10,859,431.19 = 4,431,316.17 : x - Step 2: Convert to fraction form
7,868,403.21/10,859,431.19 = 4,431,316.17/x - Step 3: Cross multiply
7,868,403.21x = 10,859,431.19 × 4,431,316.17 - Step 4: Simplify right side
7,868,403.21x = 48,121,573,007,092.77 - Step 5: Solve for x
x = 48,121,573,007,092.77/7,868,403.21 - Step 6: Final answer
x = 6,115,799.07
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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.