Finding the Fourth Proportional to 642,106.09, 886,113.84 and 355,630.96
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Solution
The fourth proportional to 642,106.09, 886,113.84 and 355,630.96 is: 490,774.84
Step by Step Solution
- Step 1: Write the proportion equation
642,106.09 : 886,113.84 = 355,630.96 : x - Step 2: Convert to fraction form
642,106.09/886,113.84 = 355,630.96/x - Step 3: Cross multiply
642,106.09x = 886,113.84 × 355,630.96 - Step 4: Simplify right side
642,106.09x = 315,129,515,588.49 - Step 5: Solve for x
x = 315,129,515,588.49/642,106.09 - Step 6: Final answer
x = 490,774.84
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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.