Finding the Fourth Proportional to 720,799.98, 994,617.99 and 398,466.78
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Solution
The fourth proportional to 720,799.98, 994,617.99 and 398,466.78 is: 549,836.62
Step by Step Solution
- Step 1: Write the proportion equation
720,799.98 : 994,617.99 = 398,466.78 : x - Step 2: Convert to fraction form
720,799.98/994,617.99 = 398,466.78/x - Step 3: Cross multiply
720,799.98x = 994,617.99 × 398,466.78 - Step 4: Simplify right side
720,799.98x = 396,322,227,805.37 - Step 5: Solve for x
x = 396,322,227,805.37/720,799.98 - Step 6: Final answer
x = 549,836.62
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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.