Finding the Fourth Proportional to 6,998,921.75, 9,658,512.02 and 3,779,657.75
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Solution
The fourth proportional to 6,998,921.75, 9,658,512.02 and 3,779,657.75 is: 5,215,927.70
Step by Step Solution
- Step 1: Write the proportion equation
6,998,921.75 : 9,658,512.02 = 3,779,657.75 : x - Step 2: Convert to fraction form
6,998,921.75/9,658,512.02 = 3,779,657.75/x - Step 3: Cross multiply
6,998,921.75x = 9,658,512.02 × 3,779,657.75 - Step 4: Simplify right side
6,998,921.75x = 36,505,869,809,861.16 - Step 5: Solve for x
x = 36,505,869,809,861.16/6,998,921.75 - Step 6: Final answer
x = 5,215,927.70
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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.