Finding the Fourth Proportional to 2,861,987,312.69, 4,292,981,964.12 and 896,992,853.84
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Solution
The fourth proportional to 2,861,987,312.69, 4,292,981,964.12 and 896,992,853.84 is: 1,345,489,592.64
Step by Step Solution
- Step 1: Write the proportion equation
2,861,987,312.69 : 4,292,981,964.12 = 896,992,853.84 : x - Step 2: Convert to fraction form
2,861,987,312.69/4,292,981,964.12 = 896,992,853.84/x - Step 3: Cross multiply
2,861,987,312.69x = 4,292,981,964.12 × 896,992,853.84 - Step 4: Simplify right side
2,861,987,312.69x = 3,850,774,143,479,647,232 - Step 5: Solve for x
x = 3,850,774,143,479,647,232/2,861,987,312.69 - Step 6: Final answer
x = 1,345,489,592.64
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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.