Finding the Fourth Proportional to 3,908,931.36, 5,394,473.60 and 2,189,993.12
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Solution
The fourth proportional to 3,908,931.36, 5,394,473.60 and 2,189,993.12 is: 3,022,273.60
Step by Step Solution
- Step 1: Write the proportion equation
3,908,931.36 : 5,394,473.60 = 2,189,993.12 : x - Step 2: Convert to fraction form
3,908,931.36/5,394,473.60 = 2,189,993.12/x - Step 3: Cross multiply
3,908,931.36x = 5,394,473.60 × 2,189,993.12 - Step 4: Simplify right side
3,908,931.36x = 11,813,860,070,021.63 - Step 5: Solve for x
x = 11,813,860,070,021.63/3,908,931.36 - Step 6: Final answer
x = 3,022,273.60
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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.