Finding the Fourth Proportional to 1,396,390.10, 2,094,585.15 and 686,271.20
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Solution
The fourth proportional to 1,396,390.10, 2,094,585.15 and 686,271.20 is: 1,029,406.80
Step by Step Solution
- Step 1: Write the proportion equation
1,396,390.10 : 2,094,585.15 = 686,271.20 : x - Step 2: Convert to fraction form
1,396,390.10/2,094,585.15 = 686,271.20/x - Step 3: Cross multiply
1,396,390.10x = 2,094,585.15 × 686,271.20 - Step 4: Simplify right side
1,396,390.10x = 1,437,453,464,392.68 - Step 5: Solve for x
x = 1,437,453,464,392.68/1,396,390.10 - Step 6: Final answer
x = 1,029,406.80
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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.