Finding the Fourth Proportional to 643,846.20, 965,769.30 and 511,135.80
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Solution
The fourth proportional to 643,846.20, 965,769.30 and 511,135.80 is: 766,703.70
Step by Step Solution
- Step 1: Write the proportion equation
643,846.20 : 965,769.30 = 511,135.80 : x - Step 2: Convert to fraction form
643,846.20/965,769.30 = 511,135.80/x - Step 3: Cross multiply
643,846.20x = 965,769.30 × 511,135.80 - Step 4: Simplify right side
643,846.20x = 493,639,263,770.94 - Step 5: Solve for x
x = 493,639,263,770.94/643,846.20 - Step 6: Final answer
x = 766,703.70
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.