Finding the Fourth Proportional to 990,250.96, 1,485,138.36 and 457,259.92
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Solution
The fourth proportional to 990,250.96, 1,485,138.36 and 457,259.92 is: 685,779.94
Step by Step Solution
- Step 1: Write the proportion equation
990,250.96 : 1,485,138.36 = 457,259.92 : x - Step 2: Convert to fraction form
990,250.96/1,485,138.36 = 457,259.92/x - Step 3: Cross multiply
990,250.96x = 1,485,138.36 × 457,259.92 - Step 4: Simplify right side
990,250.96x = 679,094,247,682.53 - Step 5: Solve for x
x = 679,094,247,682.53/990,250.96 - Step 6: Final answer
x = 685,779.94
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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.