Finding the Fourth Proportional to 811,808,342.35, 1,120,295,512.90 and 440,530,373.72
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Solution
The fourth proportional to 811,808,342.35, 1,120,295,512.90 and 440,530,373.72 is: 607,931,915.99
Step by Step Solution
- Step 1: Write the proportion equation
811,808,342.35 : 1,120,295,512.90 = 440,530,373.72 : x - Step 2: Convert to fraction form
811,808,342.35/1,120,295,512.90 = 440,530,373.72/x - Step 3: Cross multiply
811,808,342.35x = 1,120,295,512.90 × 440,530,373.72 - Step 4: Simplify right side
811,808,342.35x = 493,524,200,978,049,536 - Step 5: Solve for x
x = 493,524,200,978,049,536/811,808,342.35 - Step 6: Final answer
x = 607,931,915.99
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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.