Finding the Fourth Proportional to 1,815,425.80, 2,723,138.70 and 485,729.80
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Solution
The fourth proportional to 1,815,425.80, 2,723,138.70 and 485,729.80 is: 728,594.70
Step by Step Solution
- Step 1: Write the proportion equation
1,815,425.80 : 2,723,138.70 = 485,729.80 : x - Step 2: Convert to fraction form
1,815,425.80/2,723,138.70 = 485,729.80/x - Step 3: Cross multiply
1,815,425.80x = 2,723,138.70 × 485,729.80 - Step 4: Simplify right side
1,815,425.80x = 1,322,709,616,123.26 - Step 5: Solve for x
x = 1,322,709,616,123.26/1,815,425.80 - Step 6: Final answer
x = 728,594.70
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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.