Finding the Fourth Proportional to 851,286.72, 1,276,930.08 and 290,326.08
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Solution
The fourth proportional to 851,286.72, 1,276,930.08 and 290,326.08 is: 435,489.12
Step by Step Solution
- Step 1: Write the proportion equation
851,286.72 : 1,276,930.08 = 290,326.08 : x - Step 2: Convert to fraction form
851,286.72/1,276,930.08 = 290,326.08/x - Step 3: Cross multiply
851,286.72x = 1,276,930.08 × 290,326.08 - Step 4: Simplify right side
851,286.72x = 370,726,104,560.49 - Step 5: Solve for x
x = 370,726,104,560.49/851,286.72 - Step 6: Final answer
x = 435,489.12
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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.