Finding the Fourth Proportional to 420,108.70, 630,163.05 and 420,108.70
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Solution
The fourth proportional to 420,108.70, 630,163.05 and 420,108.70 is: 630,163.05
Step by Step Solution
- Step 1: Write the proportion equation
420,108.70 : 630,163.05 = 420,108.70 : x - Step 2: Convert to fraction form
420,108.70/630,163.05 = 420,108.70/x - Step 3: Cross multiply
420,108.70x = 630,163.05 × 420,108.70 - Step 4: Simplify right side
420,108.70x = 264,736,979,723.54 - Step 5: Solve for x
x = 264,736,979,723.54/420,108.70 - Step 6: Final answer
x = 630,163.05
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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.