Finding the Fourth Proportional to 1,639,092,313.12, 2,458,642,668.72 and 669,743,929.12
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Solution
The fourth proportional to 1,639,092,313.12, 2,458,642,668.72 and 669,743,929.12 is: 1,004,617,609.44
Step by Step Solution
- Step 1: Write the proportion equation
1,639,092,313.12 : 2,458,642,668.72 = 669,743,929.12 : x - Step 2: Convert to fraction form
1,639,092,313.12/2,458,642,668.72 = 669,743,929.12/x - Step 3: Cross multiply
1,639,092,313.12x = 2,458,642,668.72 × 669,743,929.12 - Step 4: Simplify right side
1,639,092,313.12x = 1,646,661,001,250,615,296 - Step 5: Solve for x
x = 1,646,661,001,250,615,296/1,639,092,313.12 - Step 6: Final answer
x = 1,004,617,609.44
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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.