Finding the Fourth Proportional to 664,023,420.20, 996,035,130.30 and 388,524,405.80
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Solution
The fourth proportional to 664,023,420.20, 996,035,130.30 and 388,524,405.80 is: 582,786,608.70
Step by Step Solution
- Step 1: Write the proportion equation
664,023,420.20 : 996,035,130.30 = 388,524,405.80 : x - Step 2: Convert to fraction form
664,023,420.20/996,035,130.30 = 388,524,405.80/x - Step 3: Cross multiply
664,023,420.20x = 996,035,130.30 × 388,524,405.80 - Step 4: Simplify right side
664,023,420.20x = 386,983,957,155,733,056 - Step 5: Solve for x
x = 386,983,957,155,733,056/664,023,420.20 - Step 6: Final answer
x = 582,786,608.70
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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.