Finding the Fourth Proportional to 8,143,369.68, 11,242,212.84 and 6,278,712.40
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Solution
The fourth proportional to 8,143,369.68, 11,242,212.84 and 6,278,712.40 is: 8,667,986.83
Step by Step Solution
- Step 1: Write the proportion equation
8,143,369.68 : 11,242,212.84 = 6,278,712.40 : x - Step 2: Convert to fraction form
8,143,369.68/11,242,212.84 = 6,278,712.40/x - Step 3: Cross multiply
8,143,369.68x = 11,242,212.84 × 6,278,712.40 - Step 4: Simplify right side
8,143,369.68x = 70,586,621,161,947.22 - Step 5: Solve for x
x = 70,586,621,161,947.22/8,143,369.68 - Step 6: Final answer
x = 8,667,986.83
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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.