Finding the Fourth Proportional to 1,645,964.20, 2,465,009.70 and 1,331,036.20
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Solution
The fourth proportional to 1,645,964.20, 2,465,009.70 and 1,331,036.20 is: 1,993,370.90
Step by Step Solution
- Step 1: Write the proportion equation
1,645,964.20 : 2,465,009.70 = 1,331,036.20 : x - Step 2: Convert to fraction form
1,645,964.20/2,465,009.70 = 1,331,036.20/x - Step 3: Cross multiply
1,645,964.20x = 2,465,009.70 × 1,331,036.20 - Step 4: Simplify right side
1,645,964.20x = 3,281,017,144,051.14 - Step 5: Solve for x
x = 3,281,017,144,051.14/1,645,964.20 - Step 6: Final answer
x = 1,993,370.90
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.