Finding the Fourth Proportional to 642,292.81, 886,322.51 and 351,903.97
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Solution
The fourth proportional to 642,292.81, 886,322.51 and 351,903.97 is: 485,604.71
Step by Step Solution
- Step 1: Write the proportion equation
642,292.81 : 886,322.51 = 351,903.97 : x - Step 2: Convert to fraction form
642,292.81/886,322.51 = 351,903.97/x - Step 3: Cross multiply
642,292.81x = 886,322.51 × 351,903.97 - Step 4: Simplify right side
642,292.81x = 311,900,412,635.31 - Step 5: Solve for x
x = 311,900,412,635.31/642,292.81 - Step 6: Final answer
x = 485,604.71
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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.