Finding the Fourth Proportional to 856,678.68, 1,284,968.34 and 257,626.80
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Solution
The fourth proportional to 856,678.68, 1,284,968.34 and 257,626.80 is: 386,425.26
Step by Step Solution
- Step 1: Write the proportion equation
856,678.68 : 1,284,968.34 = 257,626.80 : x - Step 2: Convert to fraction form
856,678.68/1,284,968.34 = 257,626.80/x - Step 3: Cross multiply
856,678.68x = 1,284,968.34 × 257,626.80 - Step 4: Simplify right side
856,678.68x = 331,042,281,535.51 - Step 5: Solve for x
x = 331,042,281,535.51/856,678.68 - Step 6: Final answer
x = 386,425.26
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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.