Finding the Fourth Proportional to 545,431.68, 752,452.80 and 318,977.28
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Solution
The fourth proportional to 545,431.68, 752,452.80 and 318,977.28 is: 440,046.58
Step by Step Solution
- Step 1: Write the proportion equation
545,431.68 : 752,452.80 = 318,977.28 : x - Step 2: Convert to fraction form
545,431.68/752,452.80 = 318,977.28/x - Step 3: Cross multiply
545,431.68x = 752,452.80 × 318,977.28 - Step 4: Simplify right side
545,431.68x = 240,015,347,472.38 - Step 5: Solve for x
x = 240,015,347,472.38/545,431.68 - Step 6: Final answer
x = 440,046.58
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.