Finding the Fourth Proportional to 1,159,004,805.20, 1,738,507,207.80 and 297,361,797.20
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Solution
The fourth proportional to 1,159,004,805.20, 1,738,507,207.80 and 297,361,797.20 is: 446,042,695.80
Step by Step Solution
- Step 1: Write the proportion equation
1,159,004,805.20 : 1,738,507,207.80 = 297,361,797.20 : x - Step 2: Convert to fraction form
1,159,004,805.20/1,738,507,207.80 = 297,361,797.20/x - Step 3: Cross multiply
1,159,004,805.20x = 1,738,507,207.80 × 297,361,797.20 - Step 4: Simplify right side
1,159,004,805.20x = 516,965,627,756,561,792 - Step 5: Solve for x
x = 516,965,627,756,561,792/1,159,004,805.20 - Step 6: Final answer
x = 446,042,695.80
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Double scale
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Similar ratio
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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.