Finding the Fourth Proportional to 642,294.77, 886,295.22 and 355,743.09
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Solution
The fourth proportional to 642,294.77, 886,295.22 and 355,743.09 is: 490,885.83
Step by Step Solution
- Step 1: Write the proportion equation
642,294.77 : 886,295.22 = 355,743.09 : x - Step 2: Convert to fraction form
642,294.77/886,295.22 = 355,743.09/x - Step 3: Cross multiply
642,294.77x = 886,295.22 × 355,743.09 - Step 4: Simplify right side
642,294.77x = 315,293,398,880.99 - Step 5: Solve for x
x = 315,293,398,880.99/642,294.77 - Step 6: Final answer
x = 490,885.83
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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.