Finding the Fourth Proportional to 664,586.13, 917,117.13 and 378,100.08
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Solution
The fourth proportional to 664,586.13, 917,117.13 and 378,100.08 is: 521,771.44
Step by Step Solution
- Step 1: Write the proportion equation
664,586.13 : 917,117.13 = 378,100.08 : x - Step 2: Convert to fraction form
664,586.13/917,117.13 = 378,100.08/x - Step 3: Cross multiply
664,586.13x = 917,117.13 × 378,100.08 - Step 4: Simplify right side
664,586.13x = 346,762,060,222.37 - Step 5: Solve for x
x = 346,762,060,222.37/664,586.13 - Step 6: Final answer
x = 521,771.44
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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.