Finding the Fourth Proportional to 285,423,619.10, 428,135,428.65 and 252,545,135.90
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Solution
The fourth proportional to 285,423,619.10, 428,135,428.65 and 252,545,135.90 is: 378,817,703.85
Step by Step Solution
- Step 1: Write the proportion equation
285,423,619.10 : 428,135,428.65 = 252,545,135.90 : x - Step 2: Convert to fraction form
285,423,619.10/428,135,428.65 = 252,545,135.90/x - Step 3: Cross multiply
285,423,619.10x = 428,135,428.65 × 252,545,135.90 - Step 4: Simplify right side
285,423,619.10x = 108,123,520,012,019,008 - Step 5: Solve for x
x = 108,123,520,012,019,008/285,423,619.10 - Step 6: Final answer
x = 378,817,703.85
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.