Finding the Fourth Proportional to 1,515,447.90, 2,091,589.02 and 903,640.05
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Solution
The fourth proportional to 1,515,447.90, 2,091,589.02 and 903,640.05 is: 1,247,184.81
Step by Step Solution
- Step 1: Write the proportion equation
1,515,447.90 : 2,091,589.02 = 903,640.05 : x - Step 2: Convert to fraction form
1,515,447.90/2,091,589.02 = 903,640.05/x - Step 3: Cross multiply
1,515,447.90x = 2,091,589.02 × 903,640.05 - Step 4: Simplify right side
1,515,447.90x = 1,890,043,606,612.25 - Step 5: Solve for x
x = 1,890,043,606,612.25/1,515,447.90 - Step 6: Final answer
x = 1,247,184.81
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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.