Finding the Fourth Proportional to 788,495.40, 1,183,034.70 and 315,520.20
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Solution
The fourth proportional to 788,495.40, 1,183,034.70 and 315,520.20 is: 473,396.99
Step by Step Solution
- Step 1: Write the proportion equation
788,495.40 : 1,183,034.70 = 315,520.20 : x - Step 2: Convert to fraction form
788,495.40/1,183,034.70 = 315,520.20/x - Step 3: Cross multiply
788,495.40x = 1,183,034.70 × 315,520.20 - Step 4: Simplify right side
788,495.40x = 373,271,345,150.94 - Step 5: Solve for x
x = 373,271,345,150.94/788,495.40 - Step 6: Final answer
x = 473,396.99
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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.