Finding the Fourth Proportional to 720,985.88, 994,944.11 and 398,698.62
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Solution
The fourth proportional to 720,985.88, 994,944.11 and 398,698.62 is: 550,195.03
Step by Step Solution
- Step 1: Write the proportion equation
720,985.88 : 994,944.11 = 398,698.62 : x - Step 2: Convert to fraction form
720,985.88/994,944.11 = 398,698.62/x - Step 3: Cross multiply
720,985.88x = 994,944.11 × 398,698.62 - Step 4: Simplify right side
720,985.88x = 396,682,841,640.64 - Step 5: Solve for x
x = 396,682,841,640.64/720,985.88 - Step 6: Final answer
x = 550,195.03
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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.