Finding the Fourth Proportional to 515,819.70, 773,729.55 and 397,721.70
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Solution
The fourth proportional to 515,819.70, 773,729.55 and 397,721.70 is: 596,582.55
Step by Step Solution
- Step 1: Write the proportion equation
515,819.70 : 773,729.55 = 397,721.70 : x - Step 2: Convert to fraction form
515,819.70/773,729.55 = 397,721.70/x - Step 3: Cross multiply
515,819.70x = 773,729.55 × 397,721.70 - Step 4: Simplify right side
515,819.70x = 307,729,031,966.24 - Step 5: Solve for x
x = 307,729,031,966.24/515,819.70 - Step 6: Final answer
x = 596,582.55
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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.