Finding the Fourth Proportional to 442,868,390.80, 664,302,586.20 and 328,077,134.80
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Solution
The fourth proportional to 442,868,390.80, 664,302,586.20 and 328,077,134.80 is: 492,115,702.20
Step by Step Solution
- Step 1: Write the proportion equation
442,868,390.80 : 664,302,586.20 = 328,077,134.80 : x - Step 2: Convert to fraction form
442,868,390.80/664,302,586.20 = 328,077,134.80/x - Step 3: Cross multiply
442,868,390.80x = 664,302,586.20 × 328,077,134.80 - Step 4: Simplify right side
442,868,390.80x = 217,942,489,120,726,048 - Step 5: Solve for x
x = 217,942,489,120,726,048/442,868,390.80 - Step 6: Final answer
x = 492,115,702.20
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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.