Finding the Fourth Proportional to 664,128.96, 916,460.64 and 377,718.72
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Solution
The fourth proportional to 664,128.96, 916,460.64 and 377,718.72 is: 521,230.61
Step by Step Solution
- Step 1: Write the proportion equation
664,128.96 : 916,460.64 = 377,718.72 : x - Step 2: Convert to fraction form
664,128.96/916,460.64 = 377,718.72/x - Step 3: Cross multiply
664,128.96x = 916,460.64 × 377,718.72 - Step 4: Simplify right side
664,128.96x = 346,164,339,871.18 - Step 5: Solve for x
x = 346,164,339,871.18/664,128.96 - Step 6: Final answer
x = 521,230.61
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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.