Finding the Fourth Proportional to 712,313,327.99, 982,992,485.83 and 394,794,073.53
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Solution
The fourth proportional to 712,313,327.99, 982,992,485.83 and 394,794,073.53 is: 544,815,873.13
Step by Step Solution
- Step 1: Write the proportion equation
712,313,327.99 : 982,992,485.83 = 394,794,073.53 : x - Step 2: Convert to fraction form
712,313,327.99/982,992,485.83 = 394,794,073.53/x - Step 3: Cross multiply
712,313,327.99x = 982,992,485.83 × 394,794,073.53 - Step 4: Simplify right side
712,313,327.99x = 388,079,607,730,206,464 - Step 5: Solve for x
x = 388,079,607,730,206,464/712,313,327.99 - Step 6: Final answer
x = 544,815,873.13
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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.