Finding the Fourth Proportional to 5,717,820.95, 7,890,720.20 and 3,139,511.97
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Solution
The fourth proportional to 5,717,820.95, 7,890,720.20 and 3,139,511.97 is: 4,332,596.41
Step by Step Solution
- Step 1: Write the proportion equation
5,717,820.95 : 7,890,720.20 = 3,139,511.97 : x - Step 2: Convert to fraction form
5,717,820.95/7,890,720.20 = 3,139,511.97/x - Step 3: Cross multiply
5,717,820.95x = 7,890,720.20 × 3,139,511.97 - Step 4: Simplify right side
5,717,820.95x = 24,773,010,504,123.24 - Step 5: Solve for x
x = 24,773,010,504,123.24/5,717,820.95 - Step 6: Final answer
x = 4,332,596.41
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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.