Finding the Fourth Proportional to 4,280,109.40, 6,416,144.88 and 1,438,234.12
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Solution
The fourth proportional to 4,280,109.40, 6,416,144.88 and 1,438,234.12 is: 2,156,000.61
Step by Step Solution
- Step 1: Write the proportion equation
4,280,109.40 : 6,416,144.88 = 1,438,234.12 : x - Step 2: Convert to fraction form
4,280,109.40/6,416,144.88 = 1,438,234.12/x - Step 3: Cross multiply
4,280,109.40x = 6,416,144.88 × 1,438,234.12 - Step 4: Simplify right side
4,280,109.40x = 9,227,918,485,279.31 - Step 5: Solve for x
x = 9,227,918,485,279.31/4,280,109.40 - Step 6: Final answer
x = 2,156,000.61
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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.