Finding the Fourth Proportional to 6,415,825.49, 8,850,871.31 and 5,681,528.09
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Solution
The fourth proportional to 6,415,825.49, 8,850,871.31 and 5,681,528.09 is: 7,837,880.57
Step by Step Solution
- Step 1: Write the proportion equation
6,415,825.49 : 8,850,871.31 = 5,681,528.09 : x - Step 2: Convert to fraction form
6,415,825.49/8,850,871.31 = 5,681,528.09/x - Step 3: Cross multiply
6,415,825.49x = 8,850,871.31 × 5,681,528.09 - Step 4: Simplify right side
6,415,825.49x = 50,286,473,896,078.10 - Step 5: Solve for x
x = 50,286,473,896,078.10/6,415,825.49 - Step 6: Final answer
x = 7,837,880.57
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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.