Finding the Fourth Proportional to 643,850.20, 965,775.30 and 511,139.80
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Solution
The fourth proportional to 643,850.20, 965,775.30 and 511,139.80 is: 766,709.70
Step by Step Solution
- Step 1: Write the proportion equation
643,850.20 : 965,775.30 = 511,139.80 : x - Step 2: Convert to fraction form
643,850.20/965,775.30 = 511,139.80/x - Step 3: Cross multiply
643,850.20x = 965,775.30 × 511,139.80 - Step 4: Simplify right side
643,850.20x = 493,646,193,686.94 - Step 5: Solve for x
x = 493,646,193,686.94/643,850.20 - Step 6: Final answer
x = 766,709.70
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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.