Finding the Fourth Proportional to 393,417,246.80, 551,590,361.20 and 393,417,246.80
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Solution
The fourth proportional to 393,417,246.80, 551,590,361.20 and 393,417,246.80 is: 551,590,361.20
Step by Step Solution
- Step 1: Write the proportion equation
393,417,246.80 : 551,590,361.20 = 393,417,246.80 : x - Step 2: Convert to fraction form
393,417,246.80/551,590,361.20 = 393,417,246.80/x - Step 3: Cross multiply
393,417,246.80x = 551,590,361.20 × 393,417,246.80 - Step 4: Simplify right side
393,417,246.80x = 217,005,161,264,721,568 - Step 5: Solve for x
x = 217,005,161,264,721,568/393,417,246.80 - Step 6: Final answer
x = 551,590,361.20
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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.