Finding the Fourth Proportional to 643,987,542.59, 966,135,431.70 and 207,329,044.94
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Solution
The fourth proportional to 643,987,542.59, 966,135,431.70 and 207,329,044.94 is: 311,043,184.98
Step by Step Solution
- Step 1: Write the proportion equation
643,987,542.59 : 966,135,431.70 = 207,329,044.94 : x - Step 2: Convert to fraction form
643,987,542.59/966,135,431.70 = 207,329,044.94/x - Step 3: Cross multiply
643,987,542.59x = 966,135,431.70 × 207,329,044.94 - Step 4: Simplify right side
643,987,542.59x = 200,307,936,332,224,928 - Step 5: Solve for x
x = 200,307,936,332,224,928/643,987,542.59 - Step 6: Final answer
x = 311,043,184.98
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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.