Finding the Fourth Proportional to 1,392,661.13, 2,088,991.71 and 919,235.76
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Solution
The fourth proportional to 1,392,661.13, 2,088,991.71 and 919,235.76 is: 1,378,853.65
Step by Step Solution
- Step 1: Write the proportion equation
1,392,661.13 : 2,088,991.71 = 919,235.76 : x - Step 2: Convert to fraction form
1,392,661.13/2,088,991.71 = 919,235.76/x - Step 3: Cross multiply
1,392,661.13x = 2,088,991.71 × 919,235.76 - Step 4: Simplify right side
1,392,661.13x = 1,920,275,882,175.55 - Step 5: Solve for x
x = 1,920,275,882,175.55/1,392,661.13 - Step 6: Final answer
x = 1,378,853.65
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.