Finding the Fourth Proportional to 818,621.44, 1,121,515.45 and 787,940.17
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Solution
The fourth proportional to 818,621.44, 1,121,515.45 and 787,940.17 is: 1,079,481.95
Step by Step Solution
- Step 1: Write the proportion equation
818,621.44 : 1,121,515.45 = 787,940.17 : x - Step 2: Convert to fraction form
818,621.44/1,121,515.45 = 787,940.17/x - Step 3: Cross multiply
818,621.44x = 1,121,515.45 × 787,940.17 - Step 4: Simplify right side
818,621.44x = 883,687,070,390.93 - Step 5: Solve for x
x = 883,687,070,390.93/818,621.44 - Step 6: Final answer
x = 1,079,481.95
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.