Finding the Fourth Proportional to 914,872.95, 1,261,778.99 and 643,838.85
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Solution
The fourth proportional to 914,872.95, 1,261,778.99 and 643,838.85 is: 887,972.84
Step by Step Solution
- Step 1: Write the proportion equation
914,872.95 : 1,261,778.99 = 643,838.85 : x - Step 2: Convert to fraction form
914,872.95/1,261,778.99 = 643,838.85/x - Step 3: Cross multiply
914,872.95x = 1,261,778.99 × 643,838.85 - Step 4: Simplify right side
914,872.95x = 812,382,330,656.57 - Step 5: Solve for x
x = 812,382,330,656.57/914,872.95 - Step 6: Final answer
x = 887,972.84
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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.