Finding the Fourth Proportional to 621,542,812.16, 857,728,951.36 and 343,084,263.04
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Solution
The fourth proportional to 621,542,812.16, 857,728,951.36 and 343,084,263.04 is: 473,456,211.56
Step by Step Solution
- Step 1: Write the proportion equation
621,542,812.16 : 857,728,951.36 = 343,084,263.04 : x - Step 2: Convert to fraction form
621,542,812.16/857,728,951.36 = 343,084,263.04/x - Step 3: Cross multiply
621,542,812.16x = 857,728,951.36 × 343,084,263.04 - Step 4: Simplify right side
621,542,812.16x = 294,273,305,165,417,600 - Step 5: Solve for x
x = 294,273,305,165,417,600/621,542,812.16 - Step 6: Final answer
x = 473,456,211.56
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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.