Finding the Fourth Proportional to 910,673,837.70, 1,256,733,906.74 and 492,986,122.99
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Solution
The fourth proportional to 910,673,837.70, 1,256,733,906.74 and 492,986,122.99 is: 680,323,020.90
Step by Step Solution
- Step 1: Write the proportion equation
910,673,837.70 : 1,256,733,906.74 = 492,986,122.99 : x - Step 2: Convert to fraction form
910,673,837.70/1,256,733,906.74 = 492,986,122.99/x - Step 3: Cross multiply
910,673,837.70x = 1,256,733,906.74 × 492,986,122.99 - Step 4: Simplify right side
910,673,837.70x = 619,552,376,320,373,376 - Step 5: Solve for x
x = 619,552,376,320,373,376/910,673,837.70 - Step 6: Final answer
x = 680,323,020.90
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.