Finding the Fourth Proportional to 970,124.13, 1,339,326.21 and 643,879.56
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Solution
The fourth proportional to 970,124.13, 1,339,326.21 and 643,879.56 is: 888,922.09
Step by Step Solution
- Step 1: Write the proportion equation
970,124.13 : 1,339,326.21 = 643,879.56 : x - Step 2: Convert to fraction form
970,124.13/1,339,326.21 = 643,879.56/x - Step 3: Cross multiply
970,124.13x = 1,339,326.21 × 643,879.56 - Step 4: Simplify right side
970,124.13x = 862,364,770,791.27 - Step 5: Solve for x
x = 862,364,770,791.27/970,124.13 - Step 6: Final answer
x = 888,922.09
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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.