Finding the Fourth Proportional to 784,287.40, 1,177,208.70 and 385,378.60
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Solution
The fourth proportional to 784,287.40, 1,177,208.70 and 385,378.60 is: 578,449.99
Step by Step Solution
- Step 1: Write the proportion equation
784,287.40 : 1,177,208.70 = 385,378.60 : x - Step 2: Convert to fraction form
784,287.40/1,177,208.70 = 385,378.60/x - Step 3: Cross multiply
784,287.40x = 1,177,208.70 × 385,378.60 - Step 4: Simplify right side
784,287.40x = 453,671,040,713.82 - Step 5: Solve for x
x = 453,671,040,713.82/784,287.40 - Step 6: Final answer
x = 578,449.99
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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.