Finding the Fourth Proportional to 1,203,943.68, 1,661,460.96 and 660,129.12
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Solution
The fourth proportional to 1,203,943.68, 1,661,460.96 and 660,129.12 is: 910,988.43
Step by Step Solution
- Step 1: Write the proportion equation
1,203,943.68 : 1,661,460.96 = 660,129.12 : x - Step 2: Convert to fraction form
1,203,943.68/1,661,460.96 = 660,129.12/x - Step 3: Cross multiply
1,203,943.68x = 1,661,460.96 × 660,129.12 - Step 4: Simplify right side
1,203,943.68x = 1,096,778,761,439.16 - Step 5: Solve for x
x = 1,096,778,761,439.16/1,203,943.68 - Step 6: Final answer
x = 910,988.43
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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.