Finding the Fourth Proportional to 621,542,990.16, 857,729,196.36 and 343,084,441.68
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Solution
The fourth proportional to 621,542,990.16, 857,729,196.36 and 343,084,441.68 is: 473,456,457.73
Step by Step Solution
- Step 1: Write the proportion equation
621,542,990.16 : 857,729,196.36 = 343,084,441.68 : x - Step 2: Convert to fraction form
621,542,990.16/857,729,196.36 = 343,084,441.68/x - Step 3: Cross multiply
621,542,990.16x = 857,729,196.36 × 343,084,441.68 - Step 4: Simplify right side
621,542,990.16x = 294,273,542,445,805,696 - Step 5: Solve for x
x = 294,273,542,445,805,696/621,542,990.16 - Step 6: Final answer
x = 473,456,457.73
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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.