Finding the Fourth Proportional to 3,919,685.22, 5,409,317.28 and 2,177,486.52
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Solution
The fourth proportional to 3,919,685.22, 5,409,317.28 and 2,177,486.52 is: 3,005,015.66
Step by Step Solution
- Step 1: Write the proportion equation
3,919,685.22 : 5,409,317.28 = 2,177,486.52 : x - Step 2: Convert to fraction form
3,919,685.22/5,409,317.28 = 2,177,486.52/x - Step 3: Cross multiply
3,919,685.22x = 5,409,317.28 × 2,177,486.52 - Step 4: Simplify right side
3,919,685.22x = 11,778,715,459,603.07 - Step 5: Solve for x
x = 11,778,715,459,603.07/3,919,685.22 - Step 6: Final answer
x = 3,005,015.66
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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.