Finding the Fourth Proportional to 720,472.73, 994,183.47 and 398,130.80
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Solution
The fourth proportional to 720,472.73, 994,183.47 and 398,130.80 is: 549,382.43
Step by Step Solution
- Step 1: Write the proportion equation
720,472.73 : 994,183.47 = 398,130.80 : x - Step 2: Convert to fraction form
720,472.73/994,183.47 = 398,130.80/x - Step 3: Cross multiply
720,472.73x = 994,183.47 × 398,130.80 - Step 4: Simplify right side
720,472.73x = 395,815,055,286.96 - Step 5: Solve for x
x = 395,815,055,286.96/720,472.73 - Step 6: Final answer
x = 549,382.43
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.