Finding the Fourth Proportional to 2,103,139.20, 3,154,708.80 and 1,439,587.20
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Solution
The fourth proportional to 2,103,139.20, 3,154,708.80 and 1,439,587.20 is: 2,159,380.80
Step by Step Solution
- Step 1: Write the proportion equation
2,103,139.20 : 3,154,708.80 = 1,439,587.20 : x - Step 2: Convert to fraction form
2,103,139.20/3,154,708.80 = 1,439,587.20/x - Step 3: Cross multiply
2,103,139.20x = 3,154,708.80 × 1,439,587.20 - Step 4: Simplify right side
2,103,139.20x = 4,541,478,408,207.36 - Step 5: Solve for x
x = 4,541,478,408,207.36/2,103,139.20 - Step 6: Final answer
x = 2,159,380.80
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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.