Finding the Fourth Proportional to 990,261.92, 1,485,153.84 and 457,270.58
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Solution
The fourth proportional to 990,261.92, 1,485,153.84 and 457,270.58 is: 685,795.49
Step by Step Solution
- Step 1: Write the proportion equation
990,261.92 : 1,485,153.84 = 457,270.58 : x - Step 2: Convert to fraction form
990,261.92/1,485,153.84 = 457,270.58/x - Step 3: Cross multiply
990,261.92x = 1,485,153.84 × 457,270.58 - Step 4: Simplify right side
990,261.92x = 679,117,157,806.03 - Step 5: Solve for x
x = 679,117,157,806.03/990,261.92 - Step 6: Final answer
x = 685,795.49
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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.