Finding the Fourth Proportional to 717,771.25, 990,311.83 and 427,149.84
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Solution
The fourth proportional to 717,771.25, 990,311.83 and 427,149.84 is: 589,340.32
Step by Step Solution
- Step 1: Write the proportion equation
717,771.25 : 990,311.83 = 427,149.84 : x - Step 2: Convert to fraction form
717,771.25/990,311.83 = 427,149.84/x - Step 3: Cross multiply
717,771.25x = 990,311.83 × 427,149.84 - Step 4: Simplify right side
717,771.25x = 423,011,539,734.61 - Step 5: Solve for x
x = 423,011,539,734.61/717,771.25 - Step 6: Final answer
x = 589,340.32
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.