Finding the Fourth Proportional to 1,431,901.76, 1,976,023.98 and 787,363.70
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Solution
The fourth proportional to 1,431,901.76, 1,976,023.98 and 787,363.70 is: 1,086,561.66
Step by Step Solution
- Step 1: Write the proportion equation
1,431,901.76 : 1,976,023.98 = 787,363.70 : x - Step 2: Convert to fraction form
1,431,901.76/1,976,023.98 = 787,363.70/x - Step 3: Cross multiply
1,431,901.76x = 1,976,023.98 × 787,363.70 - Step 4: Simplify right side
1,431,901.76x = 1,555,849,542,301.41 - Step 5: Solve for x
x = 1,555,849,542,301.41/1,431,901.76 - Step 6: Final answer
x = 1,086,561.66
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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.