Finding the Fourth Proportional to 812,741,660.51, 1,121,676,532.48 and 455,605,895.09
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Solution
The fourth proportional to 812,741,660.51, 1,121,676,532.48 and 455,605,895.09 is: 628,788,292.03
Step by Step Solution
- Step 1: Write the proportion equation
812,741,660.51 : 1,121,676,532.48 = 455,605,895.09 : x - Step 2: Convert to fraction form
812,741,660.51/1,121,676,532.48 = 455,605,895.09/x - Step 3: Cross multiply
812,741,660.51x = 1,121,676,532.48 × 455,605,895.09 - Step 4: Simplify right side
812,741,660.51x = 511,042,440,576,493,568 - Step 5: Solve for x
x = 511,042,440,576,493,568/812,741,660.51 - Step 6: Final answer
x = 628,788,292.03
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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.