Finding the Fourth Proportional to 521,678.97, 782,630.69 and 161,842.59
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Solution
The fourth proportional to 521,678.97, 782,630.69 and 161,842.59 is: 242,798.70
Step by Step Solution
- Step 1: Write the proportion equation
521,678.97 : 782,630.69 = 161,842.59 : x - Step 2: Convert to fraction form
521,678.97/782,630.69 = 161,842.59/x - Step 3: Cross multiply
521,678.97x = 782,630.69 × 161,842.59 - Step 4: Simplify right side
521,678.97x = 126,662,977,073.87 - Step 5: Solve for x
x = 126,662,977,073.87/521,678.97 - Step 6: Final answer
x = 242,798.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.