Finding the Fourth Proportional to 1,820,473,581.20, 2,512,257,909.04 and 985,107,115.76
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Solution
The fourth proportional to 1,820,473,581.20, 2,512,257,909.04 and 985,107,115.76 is: 1,359,450,182.84
Step by Step Solution
- Step 1: Write the proportion equation
1,820,473,581.20 : 2,512,257,909.04 = 985,107,115.76 : x - Step 2: Convert to fraction form
1,820,473,581.20/2,512,257,909.04 = 985,107,115.76/x - Step 3: Cross multiply
1,820,473,581.20x = 2,512,257,909.04 × 985,107,115.76 - Step 4: Simplify right side
1,820,473,581.20x = 2,474,843,142,819,642,880 - Step 5: Solve for x
x = 2,474,843,142,819,642,880/1,820,473,581.20 - Step 6: Final answer
x = 1,359,450,182.84
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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.