Finding the Fourth Proportional to 720,565.23, 994,431.63 and 398,268.45
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Solution
The fourth proportional to 720,565.23, 994,431.63 and 398,268.45 is: 549,638.99
Step by Step Solution
- Step 1: Write the proportion equation
720,565.23 : 994,431.63 = 398,268.45 : x - Step 2: Convert to fraction form
720,565.23/994,431.63 = 398,268.45/x - Step 3: Cross multiply
720,565.23x = 994,431.63 × 398,268.45 - Step 4: Simplify right side
720,565.23x = 396,050,743,911.07 - Step 5: Solve for x
x = 396,050,743,911.07/720,565.23 - Step 6: Final answer
x = 549,638.99
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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.