Finding the Fourth Proportional to 862,734,916.80, 1,294,102,375.20 and 815,117,803.20
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Solution
The fourth proportional to 862,734,916.80, 1,294,102,375.20 and 815,117,803.20 is: 1,222,676,704.80
Step by Step Solution
- Step 1: Write the proportion equation
862,734,916.80 : 1,294,102,375.20 = 815,117,803.20 : x - Step 2: Convert to fraction form
862,734,916.80/1,294,102,375.20 = 815,117,803.20/x - Step 3: Cross multiply
862,734,916.80x = 1,294,102,375.20 × 815,117,803.20 - Step 4: Simplify right side
862,734,916.80x = 1,054,845,885,188,926,208 - Step 5: Solve for x
x = 1,054,845,885,188,926,208/862,734,916.80 - Step 6: Final answer
x = 1,222,676,704.80
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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.