Finding the Fourth Proportional to 788,497.40, 1,183,037.70 and 315,522.20
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Solution
The fourth proportional to 788,497.40, 1,183,037.70 and 315,522.20 is: 473,399.99
Step by Step Solution
- Step 1: Write the proportion equation
788,497.40 : 1,183,037.70 = 315,522.20 : x - Step 2: Convert to fraction form
788,497.40/1,183,037.70 = 315,522.20/x - Step 3: Cross multiply
788,497.40x = 1,183,037.70 × 315,522.20 - Step 4: Simplify right side
788,497.40x = 373,274,657,786.94 - Step 5: Solve for x
x = 373,274,657,786.94/788,497.40 - Step 6: Final answer
x = 473,399.99
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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.