Finding the Fourth Proportional to 720,349.84, 994,142.64 and 398,122.84
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Solution
The fourth proportional to 720,349.84, 994,142.64 and 398,122.84 is: 549,442.60
Step by Step Solution
- Step 1: Write the proportion equation
720,349.84 : 994,142.64 = 398,122.84 : x - Step 2: Convert to fraction form
720,349.84/994,142.64 = 398,122.84/x - Step 3: Cross multiply
720,349.84x = 994,142.64 × 398,122.84 - Step 4: Simplify right side
720,349.84x = 395,790,891,201.90 - Step 5: Solve for x
x = 395,790,891,201.90/720,349.84 - Step 6: Final answer
x = 549,442.60
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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.