Finding the Fourth Proportional to 394,593,649.40, 553,338,101.80 and 394,593,649.40
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Solution
The fourth proportional to 394,593,649.40, 553,338,101.80 and 394,593,649.40 is: 553,338,101.80
Step by Step Solution
- Step 1: Write the proportion equation
394,593,649.40 : 553,338,101.80 = 394,593,649.40 : x - Step 2: Convert to fraction form
394,593,649.40/553,338,101.80 = 394,593,649.40/x - Step 3: Cross multiply
394,593,649.40x = 553,338,101.80 × 394,593,649.40 - Step 4: Simplify right side
394,593,649.40x = 218,343,700,941,330,688 - Step 5: Solve for x
x = 218,343,700,941,330,688/394,593,649.40 - Step 6: Final answer
x = 553,338,101.80
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.