Finding the Fourth Proportional to 870,080,917.20, 1,305,121,375.80 and 502,245,013.20
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Solution
The fourth proportional to 870,080,917.20, 1,305,121,375.80 and 502,245,013.20 is: 753,367,519.80
Step by Step Solution
- Step 1: Write the proportion equation
870,080,917.20 : 1,305,121,375.80 = 502,245,013.20 : x - Step 2: Convert to fraction form
870,080,917.20/1,305,121,375.80 = 502,245,013.20/x - Step 3: Cross multiply
870,080,917.20x = 1,305,121,375.80 × 502,245,013.20 - Step 4: Simplify right side
870,080,917.20x = 655,490,702,616,273,152 - Step 5: Solve for x
x = 655,490,702,616,273,152/870,080,917.20 - Step 6: Final answer
x = 753,367,519.80
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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.