Finding the Fourth Proportional to 3,898,927.19, 5,380,158.44 and 2,156,559.09
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Solution
The fourth proportional to 3,898,927.19, 5,380,158.44 and 2,156,559.09 is: 2,975,851.82
Step by Step Solution
- Step 1: Write the proportion equation
3,898,927.19 : 5,380,158.44 = 2,156,559.09 : x - Step 2: Convert to fraction form
3,898,927.19/5,380,158.44 = 2,156,559.09/x - Step 3: Cross multiply
3,898,927.19x = 5,380,158.44 × 2,156,559.09 - Step 4: Simplify right side
3,898,927.19x = 11,602,629,574,638.02 - Step 5: Solve for x
x = 11,602,629,574,638.02/3,898,927.19 - Step 6: Final answer
x = 2,975,851.82
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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.