Finding the Fourth Proportional to 28,512,834.80, 42,770,890.60 and 8,321,193.20
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Solution
The fourth proportional to 28,512,834.80, 42,770,890.60 and 8,321,193.20 is: 12,482,267.95
Step by Step Solution
- Step 1: Write the proportion equation
28,512,834.80 : 42,770,890.60 = 8,321,193.20 : x - Step 2: Convert to fraction form
28,512,834.80/42,770,890.60 = 8,321,193.20/x - Step 3: Cross multiply
28,512,834.80x = 42,770,890.60 × 8,321,193.20 - Step 4: Simplify right side
28,512,834.80x = 355,904,844,018,663.94 - Step 5: Solve for x
x = 355,904,844,018,663.94/28,512,834.80 - Step 6: Final answer
x = 12,482,267.95
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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.