Finding the Fourth Proportional to 7,889,718.70, 11,834,578.05 and 6,471,376.30
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Solution
The fourth proportional to 7,889,718.70, 11,834,578.05 and 6,471,376.30 is: 9,707,064.45
Step by Step Solution
- Step 1: Write the proportion equation
7,889,718.70 : 11,834,578.05 = 6,471,376.30 : x - Step 2: Convert to fraction form
7,889,718.70/11,834,578.05 = 6,471,376.30/x - Step 3: Cross multiply
7,889,718.70x = 11,834,578.05 × 6,471,376.30 - Step 4: Simplify right side
7,889,718.70x = 76,586,007,913,270.22 - Step 5: Solve for x
x = 76,586,007,913,270.22/7,889,718.70 - Step 6: Final answer
x = 9,707,064.45
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.