Finding the Fourth Proportional to 1,279,441,812.08, 1,919,162,717.40 and 310,093,428.08
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Solution
The fourth proportional to 1,279,441,812.08, 1,919,162,717.40 and 310,093,428.08 is: 465,140,141.95
Step by Step Solution
- Step 1: Write the proportion equation
1,279,441,812.08 : 1,919,162,717.40 = 310,093,428.08 : x - Step 2: Convert to fraction form
1,279,441,812.08/1,919,162,717.40 = 310,093,428.08/x - Step 3: Cross multiply
1,279,441,812.08x = 1,919,162,717.40 × 310,093,428.08 - Step 4: Simplify right side
1,279,441,812.08x = 595,119,746,081,894,272 - Step 5: Solve for x
x = 595,119,746,081,894,272/1,279,441,812.08 - Step 6: Final answer
x = 465,140,141.95
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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.