Finding the Fourth Proportional to 830,845.80, 1,246,268.70 and 515,658.60
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Solution
The fourth proportional to 830,845.80, 1,246,268.70 and 515,658.60 is: 773,487.90
Step by Step Solution
- Step 1: Write the proportion equation
830,845.80 : 1,246,268.70 = 515,658.60 : x - Step 2: Convert to fraction form
830,845.80/1,246,268.70 = 515,658.60/x - Step 3: Cross multiply
830,845.80x = 1,246,268.70 × 515,658.60 - Step 4: Simplify right side
830,845.80x = 642,649,173,065.82 - Step 5: Solve for x
x = 642,649,173,065.82/830,845.80 - Step 6: Final answer
x = 773,487.90
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.