Finding the Fourth Proportional to 664,592.16, 917,125.38 and 378,106.08
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Solution
The fourth proportional to 664,592.16, 917,125.38 and 378,106.08 is: 521,779.68
Step by Step Solution
- Step 1: Write the proportion equation
664,592.16 : 917,125.38 = 378,106.08 : x - Step 2: Convert to fraction form
664,592.16/917,125.38 = 378,106.08/x - Step 3: Cross multiply
664,592.16x = 917,125.38 × 378,106.08 - Step 4: Simplify right side
664,592.16x = 346,770,682,300.31 - Step 5: Solve for x
x = 346,770,682,300.31/664,592.16 - Step 6: Final answer
x = 521,779.68
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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.