Finding the Fourth Proportional to 1,247,426.12, 1,721,444.54 and 696,135.97
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Solution
The fourth proportional to 1,247,426.12, 1,721,444.54 and 696,135.97 is: 960,665.68
Step by Step Solution
- Step 1: Write the proportion equation
1,247,426.12 : 1,721,444.54 = 696,135.97 : x - Step 2: Convert to fraction form
1,247,426.12/1,721,444.54 = 696,135.97/x - Step 3: Cross multiply
1,247,426.12x = 1,721,444.54 × 696,135.97 - Step 4: Simplify right side
1,247,426.12x = 1,198,359,463,325.23 - Step 5: Solve for x
x = 1,198,359,463,325.23/1,247,426.12 - Step 6: Final answer
x = 960,665.68
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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.