Finding the Fourth Proportional to 910,853.20, 1,366,279.80 and 639,227.80
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Solution
The fourth proportional to 910,853.20, 1,366,279.80 and 639,227.80 is: 958,841.70
Step by Step Solution
- Step 1: Write the proportion equation
910,853.20 : 1,366,279.80 = 639,227.80 : x - Step 2: Convert to fraction form
910,853.20/1,366,279.80 = 639,227.80/x - Step 3: Cross multiply
910,853.20x = 1,366,279.80 × 639,227.80 - Step 4: Simplify right side
910,853.20x = 873,364,030,738.44 - Step 5: Solve for x
x = 873,364,030,738.44/910,853.20 - Step 6: Final answer
x = 958,841.70
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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.