Finding the Fourth Proportional to 478,972,129.20, 718,458,193.80 and 478,972,129.20
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Solution
The fourth proportional to 478,972,129.20, 718,458,193.80 and 478,972,129.20 is: 718,458,193.80
Step by Step Solution
- Step 1: Write the proportion equation
478,972,129.20 : 718,458,193.80 = 478,972,129.20 : x - Step 2: Convert to fraction form
478,972,129.20/718,458,193.80 = 478,972,129.20/x - Step 3: Cross multiply
478,972,129.20x = 718,458,193.80 × 478,972,129.20 - Step 4: Simplify right side
478,972,129.20x = 344,121,450,825,572,224 - Step 5: Solve for x
x = 344,121,450,825,572,224/478,972,129.20 - Step 6: Final answer
x = 718,458,193.80
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Double scale
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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.