Finding the Fourth Proportional to 556,753,343.61, 768,234,205.08 and 321,758,625.03
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Solution
The fourth proportional to 556,753,343.61, 768,234,205.08 and 321,758,625.03 is: 443,977,542.95
Step by Step Solution
- Step 1: Write the proportion equation
556,753,343.61 : 768,234,205.08 = 321,758,625.03 : x - Step 2: Convert to fraction form
556,753,343.61/768,234,205.08 = 321,758,625.03/x - Step 3: Cross multiply
556,753,343.61x = 768,234,205.08 × 321,758,625.03 - Step 4: Simplify right side
556,753,343.61x = 247,185,981,527,555,840 - Step 5: Solve for x
x = 247,185,981,527,555,840/556,753,343.61 - Step 6: Final answer
x = 443,977,542.95
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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.