Finding the Fourth Proportional to 512,486,815.68, 768,861,312.30 and 148,981,171.68
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Solution
The fourth proportional to 512,486,815.68, 768,861,312.30 and 148,981,171.68 is: 223,509,865.35
Step by Step Solution
- Step 1: Write the proportion equation
512,486,815.68 : 768,861,312.30 = 148,981,171.68 : x - Step 2: Convert to fraction form
512,486,815.68/768,861,312.30 = 148,981,171.68/x - Step 3: Cross multiply
512,486,815.68x = 768,861,312.30 × 148,981,171.68 - Step 4: Simplify right side
512,486,815.68x = 114,545,859,165,876,400 - Step 5: Solve for x
x = 114,545,859,165,876,400/512,486,815.68 - Step 6: Final answer
x = 223,509,865.35
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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.