Finding the Fourth Proportional to 543,761,366.20, 815,642,049.30 and 489,341,807.80
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Solution
The fourth proportional to 543,761,366.20, 815,642,049.30 and 489,341,807.80 is: 734,012,711.70
Step by Step Solution
- Step 1: Write the proportion equation
543,761,366.20 : 815,642,049.30 = 489,341,807.80 : x - Step 2: Convert to fraction form
543,761,366.20/815,642,049.30 = 489,341,807.80/x - Step 3: Cross multiply
543,761,366.20x = 815,642,049.30 × 489,341,807.80 - Step 4: Simplify right side
543,761,366.20x = 399,127,754,922,158,720 - Step 5: Solve for x
x = 399,127,754,922,158,720/543,761,366.20 - Step 6: Final answer
x = 734,012,711.70
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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.