Finding the Fourth Proportional to 489,919.55, 676,078.97 and 275,059.53
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Solution
The fourth proportional to 489,919.55, 676,078.97 and 275,059.53 is: 379,576.53
Step by Step Solution
- Step 1: Write the proportion equation
489,919.55 : 676,078.97 = 275,059.53 : x - Step 2: Convert to fraction form
489,919.55/676,078.97 = 275,059.53/x - Step 3: Cross multiply
489,919.55x = 676,078.97 × 275,059.53 - Step 4: Simplify right side
489,919.55x = 185,961,962,355.79 - Step 5: Solve for x
x = 185,961,962,355.79/489,919.55 - Step 6: Final answer
x = 379,576.53
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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.