Finding the Fourth Proportional to 665,737,213.70, 918,494,848.62 and 387,219,614.42
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Solution
The fourth proportional to 665,737,213.70, 918,494,848.62 and 387,219,614.42 is: 534,233,649.27
Step by Step Solution
- Step 1: Write the proportion equation
665,737,213.70 : 918,494,848.62 = 387,219,614.42 : x - Step 2: Convert to fraction form
665,737,213.70/918,494,848.62 = 387,219,614.42/x - Step 3: Cross multiply
665,737,213.70x = 918,494,848.62 × 387,219,614.42 - Step 4: Simplify right side
665,737,213.70x = 355,659,221,124,800,192 - Step 5: Solve for x
x = 355,659,221,124,800,192/665,737,213.70 - Step 6: Final answer
x = 534,233,649.27
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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.