Finding the Fourth Proportional to 638,234,071.62, 955,387,571.04 and 416,427,809.10
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Solution
The fourth proportional to 638,234,071.62, 955,387,571.04 and 416,427,809.10 is: 623,360,567.45
Step by Step Solution
- Step 1: Write the proportion equation
638,234,071.62 : 955,387,571.04 = 416,427,809.10 : x - Step 2: Convert to fraction form
638,234,071.62/955,387,571.04 = 416,427,809.10/x - Step 3: Cross multiply
638,234,071.62x = 955,387,571.04 × 416,427,809.10 - Step 4: Simplify right side
638,234,071.62x = 397,849,953,049,557,824 - Step 5: Solve for x
x = 397,849,953,049,557,824/638,234,071.62 - Step 6: Final answer
x = 623,360,567.45
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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.