Finding the Fourth Proportional to 431,490.87, 647,235.74 and 115,947.79
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Solution
The fourth proportional to 431,490.87, 647,235.74 and 115,947.79 is: 173,921.53
Step by Step Solution
- Step 1: Write the proportion equation
431,490.87 : 647,235.74 = 115,947.79 : x - Step 2: Convert to fraction form
431,490.87/647,235.74 = 115,947.79/x - Step 3: Cross multiply
431,490.87x = 647,235.74 × 115,947.79 - Step 4: Simplify right side
431,490.87x = 75,045,552,333.79 - Step 5: Solve for x
x = 75,045,552,333.79/431,490.87 - Step 6: Final answer
x = 173,921.53
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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.