Finding the Fourth Proportional to 415,425.80, 623,138.70 and 415,425.80
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Solution
The fourth proportional to 415,425.80, 623,138.70 and 415,425.80 is: 623,138.70
Step by Step Solution
- Step 1: Write the proportion equation
415,425.80 : 623,138.70 = 415,425.80 : x - Step 2: Convert to fraction form
415,425.80/623,138.70 = 415,425.80/x - Step 3: Cross multiply
415,425.80x = 623,138.70 × 415,425.80 - Step 4: Simplify right side
415,425.80x = 258,867,892,958.46 - Step 5: Solve for x
x = 258,867,892,958.46/415,425.80 - Step 6: Final answer
x = 623,138.70
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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.