Finding the Fourth Proportional to 774,496,487.97, 1,068,778,006.40 and 422,065,287.09
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Solution
The fourth proportional to 774,496,487.97, 1,068,778,006.40 and 422,065,287.09 is: 582,435,302.31
Step by Step Solution
- Step 1: Write the proportion equation
774,496,487.97 : 1,068,778,006.40 = 422,065,287.09 : x - Step 2: Convert to fraction form
774,496,487.97/1,068,778,006.40 = 422,065,287.09/x - Step 3: Cross multiply
774,496,487.97x = 1,068,778,006.40 × 422,065,287.09 - Step 4: Simplify right side
774,496,487.97x = 451,094,096,107,748,992 - Step 5: Solve for x
x = 451,094,096,107,748,992/774,496,487.97 - Step 6: Final answer
x = 582,435,302.31
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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.