Finding the Fourth Proportional to 7,168,620.88, 9,892,656.12 and 3,905,428.96
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Solution
The fourth proportional to 7,168,620.88, 9,892,656.12 and 3,905,428.96 is: 5,389,469.79
Step by Step Solution
- Step 1: Write the proportion equation
7,168,620.88 : 9,892,656.12 = 3,905,428.96 : x - Step 2: Convert to fraction form
7,168,620.88/9,892,656.12 = 3,905,428.96/x - Step 3: Cross multiply
7,168,620.88x = 9,892,656.12 × 3,905,428.96 - Step 4: Simplify right side
7,168,620.88x = 38,635,065,702,369.23 - Step 5: Solve for x
x = 38,635,065,702,369.23/7,168,620.88 - Step 6: Final answer
x = 5,389,469.79
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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.