Finding the Fourth Proportional to 790,689.20, 1,186,106.70 and 258,213.02
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Solution
The fourth proportional to 790,689.20, 1,186,106.70 and 258,213.02 is: 387,343.33
Step by Step Solution
- Step 1: Write the proportion equation
790,689.20 : 1,186,106.70 = 258,213.02 : x - Step 2: Convert to fraction form
790,689.20/1,186,106.70 = 258,213.02/x - Step 3: Cross multiply
790,689.20x = 1,186,106.70 × 258,213.02 - Step 4: Simplify right side
790,689.20x = 306,268,188,087.00 - Step 5: Solve for x
x = 306,268,188,087.00/790,689.20 - Step 6: Final answer
x = 387,343.33
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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.