Finding the Fourth Proportional to 720,616.45, 994,433.19 and 398,318.26
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Solution
The fourth proportional to 720,616.45, 994,433.19 and 398,318.26 is: 549,669.52
Step by Step Solution
- Step 1: Write the proportion equation
720,616.45 : 994,433.19 = 398,318.26 : x - Step 2: Convert to fraction form
720,616.45/994,433.19 = 398,318.26/x - Step 3: Cross multiply
720,616.45x = 994,433.19 × 398,318.26 - Step 4: Simplify right side
720,616.45x = 396,100,897,927.05 - Step 5: Solve for x
x = 396,100,897,927.05/720,616.45 - Step 6: Final answer
x = 549,669.52
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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.