Finding the Fourth Proportional to 1,286,970.21, 1,776,066.35 and 777,574.17
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Solution
The fourth proportional to 1,286,970.21, 1,776,066.35 and 777,574.17 is: 1,073,081.03
Step by Step Solution
- Step 1: Write the proportion equation
1,286,970.21 : 1,776,066.35 = 777,574.17 : x - Step 2: Convert to fraction form
1,286,970.21/1,776,066.35 = 777,574.17/x - Step 3: Cross multiply
1,286,970.21x = 1,776,066.35 × 777,574.17 - Step 4: Simplify right side
1,286,970.21x = 1,381,023,314,078.31 - Step 5: Solve for x
x = 1,381,023,314,078.31/1,286,970.21 - Step 6: Final answer
x = 1,073,081.03
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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.