Finding the Fourth Proportional to 505,961,279.24, 698,213,450.58 and 279,908,614.40
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Solution
The fourth proportional to 505,961,279.24, 698,213,450.58 and 279,908,614.40 is: 386,266,632.50
Step by Step Solution
- Step 1: Write the proportion equation
505,961,279.24 : 698,213,450.58 = 279,908,614.40 : x - Step 2: Convert to fraction form
505,961,279.24/698,213,450.58 = 279,908,614.40/x - Step 3: Cross multiply
505,961,279.24x = 698,213,450.58 × 279,908,614.40 - Step 4: Simplify right side
505,961,279.24x = 195,435,959,503,799,616 - Step 5: Solve for x
x = 195,435,959,503,799,616/505,961,279.24 - Step 6: Final answer
x = 386,266,632.50
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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.