Finding the Fourth Proportional to 419,485,488.97, 629,253,455.43 and 128,355,134.00
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Solution
The fourth proportional to 419,485,488.97, 629,253,455.43 and 128,355,134.00 is: 192,540,418.48
Step by Step Solution
- Step 1: Write the proportion equation
419,485,488.97 : 629,253,455.43 = 128,355,134.00 : x - Step 2: Convert to fraction form
419,485,488.97/629,253,455.43 = 128,355,134.00/x - Step 3: Cross multiply
419,485,488.97x = 629,253,455.43 × 128,355,134.00 - Step 4: Simplify right side
419,485,488.97x = 80,767,911,593,253,808 - Step 5: Solve for x
x = 80,767,911,593,253,808/419,485,488.97 - Step 6: Final answer
x = 192,540,418.48
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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.