Finding the Fourth Proportional to 825,543,397.42, 1,139,215,482.21 and 449,201,463.10
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Solution
The fourth proportional to 825,543,397.42, 1,139,215,482.21 and 449,201,463.10 is: 619,879,297.68
Step by Step Solution
- Step 1: Write the proportion equation
825,543,397.42 : 1,139,215,482.21 = 449,201,463.10 : x - Step 2: Convert to fraction form
825,543,397.42/1,139,215,482.21 = 449,201,463.10/x - Step 3: Cross multiply
825,543,397.42x = 1,139,215,482.21 × 449,201,463.10 - Step 4: Simplify right side
825,543,397.42x = 511,737,261,394,904,064 - Step 5: Solve for x
x = 511,737,261,394,904,064/825,543,397.42 - Step 6: Final answer
x = 619,879,297.68
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1.5x scale
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.