Finding the Fourth Proportional to 664,848,007.20, 997,272,010.80 and 180,173,815.20
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Solution
The fourth proportional to 664,848,007.20, 997,272,010.80 and 180,173,815.20 is: 270,260,722.80
Step by Step Solution
- Step 1: Write the proportion equation
664,848,007.20 : 997,272,010.80 = 180,173,815.20 : x - Step 2: Convert to fraction form
664,848,007.20/997,272,010.80 = 180,173,815.20/x - Step 3: Cross multiply
664,848,007.20x = 997,272,010.80 × 180,173,815.20 - Step 4: Simplify right side
664,848,007.20x = 179,682,302,978,011,584 - Step 5: Solve for x
x = 179,682,302,978,011,584/664,848,007.20 - Step 6: Final answer
x = 270,260,722.80
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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.