Finding the Fourth Proportional to 5,218,479.68, 7,202,289.12 and 3,182,470.24
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Solution
The fourth proportional to 5,218,479.68, 7,202,289.12 and 3,182,470.24 is: 4,392,288.98
Step by Step Solution
- Step 1: Write the proportion equation
5,218,479.68 : 7,202,289.12 = 3,182,470.24 : x - Step 2: Convert to fraction form
5,218,479.68/7,202,289.12 = 3,182,470.24/x - Step 3: Cross multiply
5,218,479.68x = 7,202,289.12 × 3,182,470.24 - Step 4: Simplify right side
5,218,479.68x = 22,921,070,784,275.79 - Step 5: Solve for x
x = 22,921,070,784,275.79/5,218,479.68 - Step 6: Final answer
x = 4,392,288.98
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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.