Finding the Fourth Proportional to 3,720,974.20, 5,581,461.30 and 3,671,207.80
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Solution
The fourth proportional to 3,720,974.20, 5,581,461.30 and 3,671,207.80 is: 5,506,811.70
Step by Step Solution
- Step 1: Write the proportion equation
3,720,974.20 : 5,581,461.30 = 3,671,207.80 : x - Step 2: Convert to fraction form
3,720,974.20/5,581,461.30 = 3,671,207.80/x - Step 3: Cross multiply
3,720,974.20x = 5,581,461.30 × 3,671,207.80 - Step 4: Simplify right side
3,720,974.20x = 20,490,704,259,958.14 - Step 5: Solve for x
x = 20,490,704,259,958.14/3,720,974.20 - Step 6: Final answer
x = 5,506,811.70
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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.