Finding the Fourth Proportional to 10,378,857.76, 15,569,772.42 and 3,190,995.18
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Solution
The fourth proportional to 10,378,857.76, 15,569,772.42 and 3,190,995.18 is: 4,786,949.58
Step by Step Solution
- Step 1: Write the proportion equation
10,378,857.76 : 15,569,772.42 = 3,190,995.18 : x - Step 2: Convert to fraction form
10,378,857.76/15,569,772.42 = 3,190,995.18/x - Step 3: Cross multiply
10,378,857.76x = 15,569,772.42 × 3,190,995.18 - Step 4: Simplify right side
10,378,857.76x = 49,683,068,745,916.94 - Step 5: Solve for x
x = 49,683,068,745,916.94/10,378,857.76 - Step 6: Final answer
x = 4,786,949.58
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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.