Finding the Fourth Proportional to 1,119,744,163.20, 1,679,616,244.80 and 811,590,614.40
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Solution
The fourth proportional to 1,119,744,163.20, 1,679,616,244.80 and 811,590,614.40 is: 1,217,385,921.60
Step by Step Solution
- Step 1: Write the proportion equation
1,119,744,163.20 : 1,679,616,244.80 = 811,590,614.40 : x - Step 2: Convert to fraction form
1,119,744,163.20/1,679,616,244.80 = 811,590,614.40/x - Step 3: Cross multiply
1,119,744,163.20x = 1,679,616,244.80 × 811,590,614.40 - Step 4: Simplify right side
1,119,744,163.20x = 1,363,160,780,073,452,800 - Step 5: Solve for x
x = 1,363,160,780,073,452,800/1,119,744,163.20 - Step 6: Final answer
x = 1,217,385,921.60
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1.5x scale
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.