Finding the Fourth Proportional to 4,128,046.80, 6,192,070.20 and 1,287,789.90
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Solution
The fourth proportional to 4,128,046.80, 6,192,070.20 and 1,287,789.90 is: 1,931,684.85
Step by Step Solution
- Step 1: Write the proportion equation
4,128,046.80 : 6,192,070.20 = 1,287,789.90 : x - Step 2: Convert to fraction form
4,128,046.80/6,192,070.20 = 1,287,789.90/x - Step 3: Cross multiply
4,128,046.80x = 6,192,070.20 × 1,287,789.90 - Step 4: Simplify right side
4,128,046.80x = 7,974,085,463,650.98 - Step 5: Solve for x
x = 7,974,085,463,650.98/4,128,046.80 - Step 6: Final answer
x = 1,931,684.85
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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.