Finding the Fourth Proportional to 2,189,690,314.75, 3,021,747,615.08 and 1,186,088,961.79
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Solution
The fourth proportional to 2,189,690,314.75, 3,021,747,615.08 and 1,186,088,961.79 is: 1,636,789,215.09
Step by Step Solution
- Step 1: Write the proportion equation
2,189,690,314.75 : 3,021,747,615.08 = 1,186,088,961.79 : x - Step 2: Convert to fraction form
2,189,690,314.75/3,021,747,615.08 = 1,186,088,961.79/x - Step 3: Cross multiply
2,189,690,314.75x = 3,021,747,615.08 × 1,186,088,961.79 - Step 4: Simplify right side
2,189,690,314.75x = 3,584,061,491,561,645,568 - Step 5: Solve for x
x = 3,584,061,491,561,645,568/2,189,690,314.75 - Step 6: Final answer
x = 1,636,789,215.09
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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.