Finding the Fourth Proportional to 672,013,185.12, 927,583,163.73 and 389,826,937.08
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Solution
The fourth proportional to 672,013,185.12, 927,583,163.73 and 389,826,937.08 is: 538,080,072.85
Step by Step Solution
- Step 1: Write the proportion equation
672,013,185.12 : 927,583,163.73 = 389,826,937.08 : x - Step 2: Convert to fraction form
672,013,185.12/927,583,163.73 = 389,826,937.08/x - Step 3: Cross multiply
672,013,185.12x = 927,583,163.73 × 389,826,937.08 - Step 4: Simplify right side
672,013,185.12x = 361,596,903,603,842,048 - Step 5: Solve for x
x = 361,596,903,603,842,048/672,013,185.12 - Step 6: Final answer
x = 538,080,072.85
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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.