Finding the Fourth Proportional to 641,438.92, 885,916.74 and 437,137.48
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Solution
The fourth proportional to 641,438.92, 885,916.74 and 437,137.48 is: 603,747.92
Step by Step Solution
- Step 1: Write the proportion equation
641,438.92 : 885,916.74 = 437,137.48 : x - Step 2: Convert to fraction form
641,438.92/885,916.74 = 437,137.48/x - Step 3: Cross multiply
641,438.92x = 885,916.74 × 437,137.48 - Step 4: Simplify right side
641,438.92x = 387,267,411,213.42 - Step 5: Solve for x
x = 387,267,411,213.42/641,438.92 - Step 6: Final answer
x = 603,747.92
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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.