Finding the Fourth Proportional to 981,181.80, 1,471,772.70 and 815,293.80
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Solution
The fourth proportional to 981,181.80, 1,471,772.70 and 815,293.80 is: 1,222,940.70
Step by Step Solution
- Step 1: Write the proportion equation
981,181.80 : 1,471,772.70 = 815,293.80 : x - Step 2: Convert to fraction form
981,181.80/1,471,772.70 = 815,293.80/x - Step 3: Cross multiply
981,181.80x = 1,471,772.70 × 815,293.80 - Step 4: Simplify right side
981,181.80x = 1,199,927,157,319.26 - Step 5: Solve for x
x = 1,199,927,157,319.26/981,181.80 - Step 6: Final answer
x = 1,222,940.70
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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.