Finding the Fourth Proportional to 712,313,313.15, 982,992,465.35 and 394,794,058.69
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Solution
The fourth proportional to 712,313,313.15, 982,992,465.35 and 394,794,058.69 is: 544,815,852.65
Step by Step Solution
- Step 1: Write the proportion equation
712,313,313.15 : 982,992,465.35 = 394,794,058.69 : x - Step 2: Convert to fraction form
712,313,313.15/982,992,465.35 = 394,794,058.69/x - Step 3: Cross multiply
712,313,313.15x = 982,992,465.35 × 394,794,058.69 - Step 4: Simplify right side
712,313,313.15x = 388,079,585,053,792,896 - Step 5: Solve for x
x = 388,079,585,053,792,896/712,313,313.15 - Step 6: Final answer
x = 544,815,852.65
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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.