Finding the Fourth Proportional to 396,071.76, 545,654.88 and 324,031.92
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Solution
The fourth proportional to 396,071.76, 545,654.88 and 324,031.92 is: 446,407.99
Step by Step Solution
- Step 1: Write the proportion equation
396,071.76 : 545,654.88 = 324,031.92 : x - Step 2: Convert to fraction form
396,071.76/545,654.88 = 324,031.92/x - Step 3: Cross multiply
396,071.76x = 545,654.88 × 324,031.92 - Step 4: Simplify right side
396,071.76x = 176,809,598,423.77 - Step 5: Solve for x
x = 176,809,598,423.77/396,071.76 - Step 6: Final answer
x = 446,407.99
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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.