Finding the Fourth Proportional to 2,938,688.20, 4,408,032.30 and 2,080,217.80
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Solution
The fourth proportional to 2,938,688.20, 4,408,032.30 and 2,080,217.80 is: 3,120,326.70
Step by Step Solution
- Step 1: Write the proportion equation
2,938,688.20 : 4,408,032.30 = 2,080,217.80 : x - Step 2: Convert to fraction form
2,938,688.20/4,408,032.30 = 2,080,217.80/x - Step 3: Cross multiply
2,938,688.20x = 4,408,032.30 × 2,080,217.80 - Step 4: Simplify right side
2,938,688.20x = 9,169,667,253,434.94 - Step 5: Solve for x
x = 9,169,667,253,434.94/2,938,688.20 - Step 6: Final answer
x = 3,120,326.70
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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.