Finding the Fourth Proportional to 2,167,389.28, 2,990,865.36 and 1,200,462.08
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Solution
The fourth proportional to 2,167,389.28, 2,990,865.36 and 1,200,462.08 is: 1,656,564.64
Step by Step Solution
- Step 1: Write the proportion equation
2,167,389.28 : 2,990,865.36 = 1,200,462.08 : x - Step 2: Convert to fraction form
2,167,389.28/2,990,865.36 = 1,200,462.08/x - Step 3: Cross multiply
2,167,389.28x = 2,990,865.36 × 1,200,462.08 - Step 4: Simplify right side
2,167,389.28x = 3,590,420,451,065.55 - Step 5: Solve for x
x = 3,590,420,451,065.55/2,167,389.28 - Step 6: Final answer
x = 1,656,564.64
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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.