Finding the Fourth Proportional to 2,781,330,332.40, 4,172,555,370.60 and 816,179,612.40
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Solution
The fourth proportional to 2,781,330,332.40, 4,172,555,370.60 and 816,179,612.40 is: 1,224,433,712.68
Step by Step Solution
- Step 1: Write the proportion equation
2,781,330,332.40 : 4,172,555,370.60 = 816,179,612.40 : x - Step 2: Convert to fraction form
2,781,330,332.40/4,172,555,370.60 = 816,179,612.40/x - Step 3: Cross multiply
2,781,330,332.40x = 4,172,555,370.60 × 816,179,612.40 - Step 4: Simplify right side
2,781,330,332.40x = 3,405,554,625,093,846,016 - Step 5: Solve for x
x = 3,405,554,625,093,846,016/2,781,330,332.40 - Step 6: Final answer
x = 1,224,433,712.68
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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.