Finding the Fourth Proportional to 809,932.80, 1,214,899.20 and 389,107.20
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Solution
The fourth proportional to 809,932.80, 1,214,899.20 and 389,107.20 is: 583,660.80
Step by Step Solution
- Step 1: Write the proportion equation
809,932.80 : 1,214,899.20 = 389,107.20 : x - Step 2: Convert to fraction form
809,932.80/1,214,899.20 = 389,107.20/x - Step 3: Cross multiply
809,932.80x = 1,214,899.20 × 389,107.20 - Step 4: Simplify right side
809,932.80x = 472,726,025,994.24 - Step 5: Solve for x
x = 472,726,025,994.24/809,932.80 - Step 6: Final answer
x = 583,660.80
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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.