Finding the Fourth Proportional to 664,305,863.20, 996,458,794.80 and 492,118,979.20
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Solution
The fourth proportional to 664,305,863.20, 996,458,794.80 and 492,118,979.20 is: 738,178,468.80
Step by Step Solution
- Step 1: Write the proportion equation
664,305,863.20 : 996,458,794.80 = 492,118,979.20 : x - Step 2: Convert to fraction form
664,305,863.20/996,458,794.80 = 492,118,979.20/x - Step 3: Cross multiply
664,305,863.20x = 996,458,794.80 × 492,118,979.20 - Step 4: Simplify right side
664,305,863.20x = 490,376,284,911,838,208 - Step 5: Solve for x
x = 490,376,284,911,838,208/664,305,863.20 - Step 6: Final answer
x = 738,178,468.80
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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.