Finding the Fourth Proportional to 7,638,916.09, 10,539,858.99 and 4,847,021.45
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Solution
The fourth proportional to 7,638,916.09, 10,539,858.99 and 4,847,021.45 is: 6,687,718.78
Step by Step Solution
- Step 1: Write the proportion equation
7,638,916.09 : 10,539,858.99 = 4,847,021.45 : x - Step 2: Convert to fraction form
7,638,916.09/10,539,858.99 = 4,847,021.45/x - Step 3: Cross multiply
7,638,916.09x = 10,539,858.99 × 4,847,021.45 - Step 4: Simplify right side
7,638,916.09x = 51,086,922,566,228.82 - Step 5: Solve for x
x = 51,086,922,566,228.82/7,638,916.09 - Step 6: Final answer
x = 6,687,718.78
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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.