Finding the Fourth Proportional to 720,518.10, 994,366.46 and 398,221.26
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Solution
The fourth proportional to 720,518.10, 994,366.46 and 398,221.26 is: 549,573.79
Step by Step Solution
- Step 1: Write the proportion equation
720,518.10 : 994,366.46 = 398,221.26 : x - Step 2: Convert to fraction form
720,518.10/994,366.46 = 398,221.26/x - Step 3: Cross multiply
720,518.10x = 994,366.46 × 398,221.26 - Step 4: Simplify right side
720,518.10x = 395,977,864,602.94 - Step 5: Solve for x
x = 395,977,864,602.94/720,518.10 - Step 6: Final answer
x = 549,573.79
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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.