Finding the Fourth Proportional to 743,291.60, 1,025,718.76 and 421,031.44
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Solution
The fourth proportional to 743,291.60, 1,025,718.76 and 421,031.44 is: 581,009.99
Step by Step Solution
- Step 1: Write the proportion equation
743,291.60 : 1,025,718.76 = 421,031.44 : x - Step 2: Convert to fraction form
743,291.60/1,025,718.76 = 421,031.44/x - Step 3: Cross multiply
743,291.60x = 1,025,718.76 × 421,031.44 - Step 4: Simplify right side
743,291.60x = 431,859,846,557.81 - Step 5: Solve for x
x = 431,859,846,557.81/743,291.60 - Step 6: Final answer
x = 581,009.99
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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.