Finding the Fourth Proportional to 681,252,388.47, 940,128,674.67 and 367,986,605.49
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Solution
The fourth proportional to 681,252,388.47, 940,128,674.67 and 367,986,605.49 is: 507,821,720.07
Step by Step Solution
- Step 1: Write the proportion equation
681,252,388.47 : 940,128,674.67 = 367,986,605.49 : x - Step 2: Convert to fraction form
681,252,388.47/940,128,674.67 = 367,986,605.49/x - Step 3: Cross multiply
681,252,388.47x = 940,128,674.67 × 367,986,605.49 - Step 4: Simplify right side
681,252,388.47x = 345,954,759,715,625,856 - Step 5: Solve for x
x = 345,954,759,715,625,856/681,252,388.47 - Step 6: Final answer
x = 507,821,720.07
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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.