Finding the Fourth Proportional to 472,394,313.20, 708,591,469.80 and 472,394,313.20
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Solution
The fourth proportional to 472,394,313.20, 708,591,469.80 and 472,394,313.20 is: 708,591,469.80
Step by Step Solution
- Step 1: Write the proportion equation
472,394,313.20 : 708,591,469.80 = 472,394,313.20 : x - Step 2: Convert to fraction form
472,394,313.20/708,591,469.80 = 472,394,313.20/x - Step 3: Cross multiply
472,394,313.20x = 708,591,469.80 × 472,394,313.20 - Step 4: Simplify right side
472,394,313.20x = 334,734,580,715,549,504 - Step 5: Solve for x
x = 334,734,580,715,549,504/472,394,313.20 - Step 6: Final answer
x = 708,591,469.80
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Double scale
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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.