Finding the Fourth Proportional to 8,143,317.34, 11,242,140.71 and 6,278,660.20
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Solution
The fourth proportional to 8,143,317.34, 11,242,140.71 and 6,278,660.20 is: 8,667,914.86
Step by Step Solution
- Step 1: Write the proportion equation
8,143,317.34 : 11,242,140.71 = 6,278,660.20 : x - Step 2: Convert to fraction form
8,143,317.34/11,242,140.71 = 6,278,660.20/x - Step 3: Cross multiply
8,143,317.34x = 11,242,140.71 × 6,278,660.20 - Step 4: Simplify right side
8,143,317.34x = 70,585,581,407,283.44 - Step 5: Solve for x
x = 70,585,581,407,283.44/8,143,317.34 - Step 6: Final answer
x = 8,667,914.86
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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.