Finding the Fourth Proportional to 512,663.70, 768,995.55 and 512,663.70
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Solution
The fourth proportional to 512,663.70, 768,995.55 and 512,663.70 is: 768,995.55
Step by Step Solution
- Step 1: Write the proportion equation
512,663.70 : 768,995.55 = 512,663.70 : x - Step 2: Convert to fraction form
512,663.70/768,995.55 = 512,663.70/x - Step 3: Cross multiply
512,663.70x = 768,995.55 × 512,663.70 - Step 4: Simplify right side
512,663.70x = 394,236,103,946.54 - Step 5: Solve for x
x = 394,236,103,946.54/512,663.70 - Step 6: Final answer
x = 768,995.55
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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.