Finding the Fourth Proportional to 462,399.75, 693,599.63 and 129,975.75
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Solution
The fourth proportional to 462,399.75, 693,599.63 and 129,975.75 is: 194,963.63
Step by Step Solution
- Step 1: Write the proportion equation
462,399.75 : 693,599.63 = 129,975.75 : x - Step 2: Convert to fraction form
462,399.75/693,599.63 = 129,975.75/x - Step 3: Cross multiply
462,399.75x = 693,599.63 × 129,975.75 - Step 4: Simplify right side
462,399.75x = 90,151,131,459.09 - Step 5: Solve for x
x = 90,151,131,459.09/462,399.75 - Step 6: Final answer
x = 194,963.63
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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.