Finding the Fourth Proportional to 830,758.45, 1,245,426.82 and 318,790.99
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Solution
The fourth proportional to 830,758.45, 1,245,426.82 and 318,790.99 is: 477,913.71
Step by Step Solution
- Step 1: Write the proportion equation
830,758.45 : 1,245,426.82 = 318,790.99 : x - Step 2: Convert to fraction form
830,758.45/1,245,426.82 = 318,790.99/x - Step 3: Cross multiply
830,758.45x = 1,245,426.82 × 318,790.99 - Step 4: Simplify right side
830,758.45x = 397,030,848,920.35 - Step 5: Solve for x
x = 397,030,848,920.35/830,758.45 - Step 6: Final answer
x = 477,913.71
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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.