Finding the Fourth Proportional to 720,236,447.70, 1,011,052,004.70 and 720,236,447.70
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Solution
The fourth proportional to 720,236,447.70, 1,011,052,004.70 and 720,236,447.70 is: 1,011,052,004.70
Step by Step Solution
- Step 1: Write the proportion equation
720,236,447.70 : 1,011,052,004.70 = 720,236,447.70 : x - Step 2: Convert to fraction form
720,236,447.70/1,011,052,004.70 = 720,236,447.70/x - Step 3: Cross multiply
720,236,447.70x = 1,011,052,004.70 × 720,236,447.70 - Step 4: Simplify right side
720,236,447.70x = 728,196,504,305,091,840 - Step 5: Solve for x
x = 728,196,504,305,091,840/720,236,447.70 - Step 6: Final answer
x = 1,011,052,004.70
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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 (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.