Finding the Fourth Proportional to 442,879,879.80, 664,319,819.70 and 422,724,487.80
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Solution
The fourth proportional to 442,879,879.80, 664,319,819.70 and 422,724,487.80 is: 634,086,731.70
Step by Step Solution
- Step 1: Write the proportion equation
442,879,879.80 : 664,319,819.70 = 422,724,487.80 : x - Step 2: Convert to fraction form
442,879,879.80/664,319,819.70 = 422,724,487.80/x - Step 3: Cross multiply
442,879,879.80x = 664,319,819.70 × 422,724,487.80 - Step 4: Simplify right side
442,879,879.80x = 280,824,255,518,070,880 - Step 5: Solve for x
x = 280,824,255,518,070,880/442,879,879.80 - Step 6: Final answer
x = 634,086,731.70
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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.