Finding the Fourth Proportional to 720,530.56, 994,350.92 and 398,245.74
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Solution
The fourth proportional to 720,530.56, 994,350.92 and 398,245.74 is: 549,589.48
Step by Step Solution
- Step 1: Write the proportion equation
720,530.56 : 994,350.92 = 398,245.74 : x - Step 2: Convert to fraction form
720,530.56/994,350.92 = 398,245.74/x - Step 3: Cross multiply
720,530.56x = 994,350.92 × 398,245.74 - Step 4: Simplify right side
720,530.56x = 395,996,017,955.08 - Step 5: Solve for x
x = 395,996,017,955.08/720,530.56 - Step 6: Final answer
x = 549,589.48
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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.