Finding the Fourth Proportional to 990,240.42, 1,485,121.68 and 457,249.08
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Solution
The fourth proportional to 990,240.42, 1,485,121.68 and 457,249.08 is: 685,763.28
Step by Step Solution
- Step 1: Write the proportion equation
990,240.42 : 1,485,121.68 = 457,249.08 : x - Step 2: Convert to fraction form
990,240.42/1,485,121.68 = 457,249.08/x - Step 3: Cross multiply
990,240.42x = 1,485,121.68 × 457,249.08 - Step 4: Simplify right side
990,240.42x = 679,070,521,868.06 - Step 5: Solve for x
x = 679,070,521,868.06/990,240.42 - Step 6: Final answer
x = 685,763.28
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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.