Finding the Fourth Proportional to 664,586.13, 917,117.12 and 378,100.07
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Solution
The fourth proportional to 664,586.13, 917,117.12 and 378,100.07 is: 521,771.42
Step by Step Solution
- Step 1: Write the proportion equation
664,586.13 : 917,117.12 = 378,100.07 : x - Step 2: Convert to fraction form
664,586.13/917,117.12 = 378,100.07/x - Step 3: Cross multiply
664,586.13x = 917,117.12 × 378,100.07 - Step 4: Simplify right side
664,586.13x = 346,762,047,270.20 - Step 5: Solve for x
x = 346,762,047,270.20/664,586.13 - Step 6: Final answer
x = 521,771.42
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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.