Finding the Fourth Proportional to 1,205,201.21, 1,663,173.06 and 661,346.09
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Solution
The fourth proportional to 1,205,201.21, 1,663,173.06 and 661,346.09 is: 912,655.07
Step by Step Solution
- Step 1: Write the proportion equation
1,205,201.21 : 1,663,173.06 = 661,346.09 : x - Step 2: Convert to fraction form
1,205,201.21/1,663,173.06 = 661,346.09/x - Step 3: Cross multiply
1,205,201.21x = 1,663,173.06 × 661,346.09 - Step 4: Simplify right side
1,205,201.21x = 1,099,932,991,908.47 - Step 5: Solve for x
x = 1,099,932,991,908.47/1,205,201.21 - Step 6: Final answer
x = 912,655.07
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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.