Finding the Fourth Proportional to 979,267,927.20, 1,468,901,890.80 and 252,256,639.20
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Solution
The fourth proportional to 979,267,927.20, 1,468,901,890.80 and 252,256,639.20 is: 378,384,958.80
Step by Step Solution
- Step 1: Write the proportion equation
979,267,927.20 : 1,468,901,890.80 = 252,256,639.20 : x - Step 2: Convert to fraction form
979,267,927.20/1,468,901,890.80 = 252,256,639.20/x - Step 3: Cross multiply
979,267,927.20x = 1,468,901,890.80 × 252,256,639.20 - Step 4: Simplify right side
979,267,927.20x = 370,540,254,287,733,376 - Step 5: Solve for x
x = 370,540,254,287,733,376/979,267,927.20 - Step 6: Final answer
x = 378,384,958.80
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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.