Finding the Fourth Proportional to 2,640,227,289.60, 3,960,341,668.24 and 981,917,903.84
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Solution
The fourth proportional to 2,640,227,289.60, 3,960,341,668.24 and 981,917,903.84 is: 1,472,877,128.68
Step by Step Solution
- Step 1: Write the proportion equation
2,640,227,289.60 : 3,960,341,668.24 = 981,917,903.84 : x - Step 2: Convert to fraction form
2,640,227,289.60/3,960,341,668.24 = 981,917,903.84/x - Step 3: Cross multiply
2,640,227,289.60x = 3,960,341,668.24 × 981,917,903.84 - Step 4: Simplify right side
2,640,227,289.60x = 3,888,730,389,368,429,568 - Step 5: Solve for x
x = 3,888,730,389,368,429,568/2,640,227,289.60 - Step 6: Final answer
x = 1,472,877,128.68
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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.