Finding the Fourth Proportional to 455,543,816.12, 683,432,247.56 and 132,427,688.12
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Solution
The fourth proportional to 455,543,816.12, 683,432,247.56 and 132,427,688.12 is: 198,675,405.81
Step by Step Solution
- Step 1: Write the proportion equation
455,543,816.12 : 683,432,247.56 = 132,427,688.12 : x - Step 2: Convert to fraction form
455,543,816.12/683,432,247.56 = 132,427,688.12/x - Step 3: Cross multiply
455,543,816.12x = 683,432,247.56 × 132,427,688.12 - Step 4: Simplify right side
455,543,816.12x = 90,505,352,531,026,304 - Step 5: Solve for x
x = 90,505,352,531,026,304/455,543,816.12 - Step 6: Final answer
x = 198,675,405.81
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.