Finding the Fourth Proportional to 875,393.09, 1,208,135.34 and 513,121.33
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Solution
The fourth proportional to 875,393.09, 1,208,135.34 and 513,121.33 is: 708,161.87
Step by Step Solution
- Step 1: Write the proportion equation
875,393.09 : 1,208,135.34 = 513,121.33 : x - Step 2: Convert to fraction form
875,393.09/1,208,135.34 = 513,121.33/x - Step 3: Cross multiply
875,393.09x = 1,208,135.34 × 513,121.33 - Step 4: Simplify right side
875,393.09x = 619,920,006,440.13 - Step 5: Solve for x
x = 619,920,006,440.13/875,393.09 - Step 6: Final answer
x = 708,161.87
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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.