Finding the Fourth Proportional to 880,469.10, 1,320,120.45 and 319,430.70
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Solution
The fourth proportional to 880,469.10, 1,320,120.45 and 319,430.70 is: 478,934.47
Step by Step Solution
- Step 1: Write the proportion equation
880,469.10 : 1,320,120.45 = 319,430.70 : x - Step 2: Convert to fraction form
880,469.10/1,320,120.45 = 319,430.70/x - Step 3: Cross multiply
880,469.10x = 1,320,120.45 × 319,430.70 - Step 4: Simplify right side
880,469.10x = 421,686,999,427.82 - Step 5: Solve for x
x = 421,686,999,427.82/880,469.10 - Step 6: Final answer
x = 478,934.47
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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.