Finding the Fourth Proportional to 1,425,206.26, 1,966,785.12 and 780,637.24
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Solution
The fourth proportional to 1,425,206.26, 1,966,785.12 and 780,637.24 is: 1,077,279.65
Step by Step Solution
- Step 1: Write the proportion equation
1,425,206.26 : 1,966,785.12 = 780,637.24 : x - Step 2: Convert to fraction form
1,425,206.26/1,966,785.12 = 780,637.24/x - Step 3: Cross multiply
1,425,206.26x = 1,966,785.12 × 780,637.24 - Step 4: Simplify right side
1,425,206.26x = 1,535,345,707,749.87 - Step 5: Solve for x
x = 1,535,345,707,749.87/1,425,206.26 - Step 6: Final answer
x = 1,077,279.65
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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.