Finding the Fourth Proportional to 394,192,637.24, 543,989,364.08 and 217,992,487.95
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Solution
The fourth proportional to 394,192,637.24, 543,989,364.08 and 217,992,487.95 is: 300,831,582.56
Step by Step Solution
- Step 1: Write the proportion equation
394,192,637.24 : 543,989,364.08 = 217,992,487.95 : x - Step 2: Convert to fraction form
394,192,637.24/543,989,364.08 = 217,992,487.95/x - Step 3: Cross multiply
394,192,637.24x = 543,989,364.08 × 217,992,487.95 - Step 4: Simplify right side
394,192,637.24x = 118,585,594,893,047,600 - Step 5: Solve for x
x = 118,585,594,893,047,600/394,192,637.24 - Step 6: Final answer
x = 300,831,582.56
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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.