Finding the Fourth Proportional to 812,963.96, 1,121,438.27 and 640,245.63
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Solution
The fourth proportional to 812,963.96, 1,121,438.27 and 640,245.63 is: 883,183.00
Step by Step Solution
- Step 1: Write the proportion equation
812,963.96 : 1,121,438.27 = 640,245.63 : x - Step 2: Convert to fraction form
812,963.96/1,121,438.27 = 640,245.63/x - Step 3: Cross multiply
812,963.96x = 1,121,438.27 × 640,245.63 - Step 4: Simplify right side
812,963.96x = 717,995,948,481.03 - Step 5: Solve for x
x = 717,995,948,481.03/812,963.96 - Step 6: Final answer
x = 883,183.00
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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.