Finding the Fourth Proportional to 1,251,129.09, 1,721,903.94 and 1,031,581.63
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Solution
The fourth proportional to 1,251,129.09, 1,721,903.94 and 1,031,581.63 is: 1,419,745.16
Step by Step Solution
- Step 1: Write the proportion equation
1,251,129.09 : 1,721,903.94 = 1,031,581.63 : x - Step 2: Convert to fraction form
1,251,129.09/1,721,903.94 = 1,031,581.63/x - Step 3: Cross multiply
1,251,129.09x = 1,721,903.94 × 1,031,581.63 - Step 4: Simplify right side
1,251,129.09x = 1,776,284,475,281.00 - Step 5: Solve for x
x = 1,776,284,475,281.00/1,251,129.09 - Step 6: Final answer
x = 1,419,745.16
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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.