Finding the Fourth Proportional to 643,987,543.60, 966,135,433.20 and 207,329,045.95
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Solution
The fourth proportional to 643,987,543.60, 966,135,433.20 and 207,329,045.95 is: 311,043,186.49
Step by Step Solution
- Step 1: Write the proportion equation
643,987,543.60 : 966,135,433.20 = 207,329,045.95 : x - Step 2: Convert to fraction form
643,987,543.60/966,135,433.20 = 207,329,045.95/x - Step 3: Cross multiply
643,987,543.60x = 966,135,433.20 × 207,329,045.95 - Step 4: Simplify right side
643,987,543.60x = 200,307,937,623,845,952 - Step 5: Solve for x
x = 200,307,937,623,845,952/643,987,543.60 - Step 6: Final answer
x = 311,043,186.49
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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.