Finding the Fourth Proportional to 987,193.60, 1,480,444.80 and 513,721.60
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Solution
The fourth proportional to 987,193.60, 1,480,444.80 and 513,721.60 is: 770,402.55
Step by Step Solution
- Step 1: Write the proportion equation
987,193.60 : 1,480,444.80 = 513,721.60 : x - Step 2: Convert to fraction form
987,193.60/1,480,444.80 = 513,721.60/x - Step 3: Cross multiply
987,193.60x = 1,480,444.80 × 513,721.60 - Step 4: Simplify right side
987,193.60x = 760,536,471,367.68 - Step 5: Solve for x
x = 760,536,471,367.68/987,193.60 - Step 6: Final answer
x = 770,402.55
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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.