Finding the Fourth Proportional to 3,138,373.81, 4,331,099.70 and 1,742,941.82
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Solution
The fourth proportional to 3,138,373.81, 4,331,099.70 and 1,742,941.82 is: 2,405,339.60
Step by Step Solution
- Step 1: Write the proportion equation
3,138,373.81 : 4,331,099.70 = 1,742,941.82 : x - Step 2: Convert to fraction form
3,138,373.81/4,331,099.70 = 1,742,941.82/x - Step 3: Cross multiply
3,138,373.81x = 4,331,099.70 × 1,742,941.82 - Step 4: Simplify right side
3,138,373.81x = 7,548,854,780,184.77 - Step 5: Solve for x
x = 7,548,854,780,184.77/3,138,373.81 - Step 6: Final answer
x = 2,405,339.60
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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.