Finding the Fourth Proportional to 690,213.14, 952,661.97 and 399,777.92
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Solution
The fourth proportional to 690,213.14, 952,661.97 and 399,777.92 is: 551,790.74
Step by Step Solution
- Step 1: Write the proportion equation
690,213.14 : 952,661.97 = 399,777.92 : x - Step 2: Convert to fraction form
690,213.14/952,661.97 = 399,777.92/x - Step 3: Cross multiply
690,213.14x = 952,661.97 × 399,777.92 - Step 4: Simplify right side
690,213.14x = 380,853,220,829.70 - Step 5: Solve for x
x = 380,853,220,829.70/690,213.14 - Step 6: Final answer
x = 551,790.74
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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.