Finding the Fourth Proportional to 990,998.66, 1,486,719.49 and 317,120.42
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Solution
The fourth proportional to 990,998.66, 1,486,719.49 and 317,120.42 is: 475,751.51
Step by Step Solution
- Step 1: Write the proportion equation
990,998.66 : 1,486,719.49 = 317,120.42 : x - Step 2: Convert to fraction form
990,998.66/1,486,719.49 = 317,120.42/x - Step 3: Cross multiply
990,998.66x = 1,486,719.49 × 317,120.42 - Step 4: Simplify right side
990,998.66x = 471,469,109,090.99 - Step 5: Solve for x
x = 471,469,109,090.99/990,998.66 - Step 6: Final answer
x = 475,751.51
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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.