Finding the Fourth Proportional to 1,440,614.09, 1,988,160.87 and 820,445.63
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Solution
The fourth proportional to 1,440,614.09, 1,988,160.87 and 820,445.63 is: 1,132,279.56
Step by Step Solution
- Step 1: Write the proportion equation
1,440,614.09 : 1,988,160.87 = 820,445.63 : x - Step 2: Convert to fraction form
1,440,614.09/1,988,160.87 = 820,445.63/x - Step 3: Cross multiply
1,440,614.09x = 1,988,160.87 × 820,445.63 - Step 4: Simplify right side
1,440,614.09x = 1,631,177,887,587.69 - Step 5: Solve for x
x = 1,631,177,887,587.69/1,440,614.09 - Step 6: Final answer
x = 1,132,279.56
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1.5x scale
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.