Finding the Fourth Proportional to 711,306,486.18, 981,614,573.64 and 389,429,083.62
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Solution
The fourth proportional to 711,306,486.18, 981,614,573.64 and 389,429,083.62 is: 537,418,498.65
Step by Step Solution
- Step 1: Write the proportion equation
711,306,486.18 : 981,614,573.64 = 389,429,083.62 : x - Step 2: Convert to fraction form
711,306,486.18/981,614,573.64 = 389,429,083.62/x - Step 3: Cross multiply
711,306,486.18x = 981,614,573.64 × 389,429,083.62 - Step 4: Simplify right side
711,306,486.18x = 382,269,263,880,662,208 - Step 5: Solve for x
x = 382,269,263,880,662,208/711,306,486.18 - Step 6: Final answer
x = 537,418,498.65
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.