Finding the Fourth Proportional to 1,620,450,856.19, 2,236,224,450.67 and 877,894,918.94
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Solution
The fourth proportional to 1,620,450,856.19, 2,236,224,450.67 and 877,894,918.94 is: 1,211,496,217.46
Step by Step Solution
- Step 1: Write the proportion equation
1,620,450,856.19 : 2,236,224,450.67 = 877,894,918.94 : x - Step 2: Convert to fraction form
1,620,450,856.19/2,236,224,450.67 = 877,894,918.94/x - Step 3: Cross multiply
1,620,450,856.19x = 2,236,224,450.67 × 877,894,918.94 - Step 4: Simplify right side
1,620,450,856.19x = 1,963,170,082,855,981,568 - Step 5: Solve for x
x = 1,963,170,082,855,981,568/1,620,450,856.19 - Step 6: Final answer
x = 1,211,496,217.46
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.