Finding the Fourth Proportional to 3,947,364.84, 5,447,679.95 and 3,138,245.92
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Solution
The fourth proportional to 3,947,364.84, 5,447,679.95 and 3,138,245.92 is: 4,331,030.97
Step by Step Solution
- Step 1: Write the proportion equation
3,947,364.84 : 5,447,679.95 = 3,138,245.92 : x - Step 2: Convert to fraction form
3,947,364.84/5,447,679.95 = 3,138,245.92/x - Step 3: Cross multiply
3,947,364.84x = 5,447,679.95 × 3,138,245.92 - Step 4: Simplify right side
3,947,364.84x = 17,096,159,370,779.72 - Step 5: Solve for x
x = 17,096,159,370,779.72/3,947,364.84 - Step 6: Final answer
x = 4,331,030.97
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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.