Finding the Fourth Proportional to 905,511.90, 1,358,267.85 and 274,343.70
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Solution
The fourth proportional to 905,511.90, 1,358,267.85 and 274,343.70 is: 411,515.55
Step by Step Solution
- Step 1: Write the proportion equation
905,511.90 : 1,358,267.85 = 274,343.70 : x - Step 2: Convert to fraction form
905,511.90/1,358,267.85 = 274,343.70/x - Step 3: Cross multiply
905,511.90x = 1,358,267.85 × 274,343.70 - Step 4: Simplify right side
905,511.90x = 372,632,227,560.05 - Step 5: Solve for x
x = 372,632,227,560.05/905,511.90 - Step 6: Final answer
x = 411,515.55
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Similar ratio
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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.