Finding the Fourth Proportional to 8,979,367.92, 12,366,336.60 and 8,403,036.72
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Solution
The fourth proportional to 8,979,367.92, 12,366,336.60 and 8,403,036.72 is: 11,572,616.41
Step by Step Solution
- Step 1: Write the proportion equation
8,979,367.92 : 12,366,336.60 = 8,403,036.72 : x - Step 2: Convert to fraction form
8,979,367.92/12,366,336.60 = 8,403,036.72/x - Step 3: Cross multiply
8,979,367.92x = 12,366,336.60 × 8,403,036.72 - Step 4: Simplify right side
8,979,367.92x = 103,914,780,541,679.95 - Step 5: Solve for x
x = 103,914,780,541,679.95/8,979,367.92 - Step 6: Final answer
x = 11,572,616.41
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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.