Finding the Fourth Proportional to 992,738,014.40, 1,489,107,021.60 and 265,726,726.40
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Solution
The fourth proportional to 992,738,014.40, 1,489,107,021.60 and 265,726,726.40 is: 398,590,089.60
Step by Step Solution
- Step 1: Write the proportion equation
992,738,014.40 : 1,489,107,021.60 = 265,726,726.40 : x - Step 2: Convert to fraction form
992,738,014.40/1,489,107,021.60 = 265,726,726.40/x - Step 3: Cross multiply
992,738,014.40x = 1,489,107,021.60 × 265,726,726.40 - Step 4: Simplify right side
992,738,014.40x = 395,695,534,109,022,080 - Step 5: Solve for x
x = 395,695,534,109,022,080/992,738,014.40 - Step 6: Final answer
x = 398,590,089.60
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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.