Finding the Fourth Proportional to 1,278,408.01, 1,764,191.95 and 697,642.63
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Solution
The fourth proportional to 1,278,408.01, 1,764,191.95 and 697,642.63 is: 962,740.77
Step by Step Solution
- Step 1: Write the proportion equation
1,278,408.01 : 1,764,191.95 = 697,642.63 : x - Step 2: Convert to fraction form
1,278,408.01/1,764,191.95 = 697,642.63/x - Step 3: Cross multiply
1,278,408.01x = 1,764,191.95 × 697,642.63 - Step 4: Simplify right side
1,278,408.01x = 1,230,775,511,822.83 - Step 5: Solve for x
x = 1,230,775,511,822.83/1,278,408.01 - Step 6: Final answer
x = 962,740.77
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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.