Finding the Fourth Proportional to 431,567,999.30, 647,351,998.95 and 247,335,119.30
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Solution
The fourth proportional to 431,567,999.30, 647,351,998.95 and 247,335,119.30 is: 371,002,678.95
Step by Step Solution
- Step 1: Write the proportion equation
431,567,999.30 : 647,351,998.95 = 247,335,119.30 : x - Step 2: Convert to fraction form
431,567,999.30/647,351,998.95 = 247,335,119.30/x - Step 3: Cross multiply
431,567,999.30x = 647,351,998.95 × 247,335,119.30 - Step 4: Simplify right side
431,567,999.30x = 160,112,883,889,391,744 - Step 5: Solve for x
x = 160,112,883,889,391,744/431,567,999.30 - Step 6: Final answer
x = 371,002,678.95
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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.