Finding the Fourth Proportional to 818,621.94, 1,121,516.14 and 787,940.68
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Solution
The fourth proportional to 818,621.94, 1,121,516.14 and 787,940.68 is: 1,079,482.66
Step by Step Solution
- Step 1: Write the proportion equation
818,621.94 : 1,121,516.14 = 787,940.68 : x - Step 2: Convert to fraction form
818,621.94/1,121,516.14 = 787,940.68/x - Step 3: Cross multiply
818,621.94x = 1,121,516.14 × 787,940.68 - Step 4: Simplify right side
818,621.94x = 883,688,189,982.58 - Step 5: Solve for x
x = 883,688,189,982.58/818,621.94 - Step 6: Final answer
x = 1,079,482.66
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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.