Finding the Fourth Proportional to 556,129.20, 834,193.80 and 486,145.20
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Solution
The fourth proportional to 556,129.20, 834,193.80 and 486,145.20 is: 729,217.80
Step by Step Solution
- Step 1: Write the proportion equation
556,129.20 : 834,193.80 = 486,145.20 : x - Step 2: Convert to fraction form
556,129.20/834,193.80 = 486,145.20/x - Step 3: Cross multiply
556,129.20x = 834,193.80 × 486,145.20 - Step 4: Simplify right side
556,129.20x = 405,539,311,739.76 - Step 5: Solve for x
x = 405,539,311,739.76/556,129.20 - Step 6: Final answer
x = 729,217.80
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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.