Finding the Fourth Proportional to 5,138,339.63, 7,709,230.16 and 1,680,238.79
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Solution
The fourth proportional to 5,138,339.63, 7,709,230.16 and 1,680,238.79 is: 2,520,920.86
Step by Step Solution
- Step 1: Write the proportion equation
5,138,339.63 : 7,709,230.16 = 1,680,238.79 : x - Step 2: Convert to fraction form
5,138,339.63/7,709,230.16 = 1,680,238.79/x - Step 3: Cross multiply
5,138,339.63x = 7,709,230.16 × 1,680,238.79 - Step 4: Simplify right side
5,138,339.63x = 12,953,347,544,133.07 - Step 5: Solve for x
x = 12,953,347,544,133.07/5,138,339.63 - Step 6: Final answer
x = 2,520,920.86
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.