Finding the Fourth Proportional to 757,123,310.80, 1,135,684,966.20 and 272,386,133.20
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Solution
The fourth proportional to 757,123,310.80, 1,135,684,966.20 and 272,386,133.20 is: 408,579,199.80
Step by Step Solution
- Step 1: Write the proportion equation
757,123,310.80 : 1,135,684,966.20 = 272,386,133.20 : x - Step 2: Convert to fraction form
757,123,310.80/1,135,684,966.20 = 272,386,133.20/x - Step 3: Cross multiply
757,123,310.80x = 1,135,684,966.20 × 272,386,133.20 - Step 4: Simplify right side
757,123,310.80x = 309,344,836,476,590,720 - Step 5: Solve for x
x = 309,344,836,476,590,720/757,123,310.80 - Step 6: Final answer
x = 408,579,199.80
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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.