Finding the Fourth Proportional to 3,781,452.12, 5,220,330.30 and 2,920,078.68
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Solution
The fourth proportional to 3,781,452.12, 5,220,330.30 and 2,920,078.68 is: 4,031,196.15
Step by Step Solution
- Step 1: Write the proportion equation
3,781,452.12 : 5,220,330.30 = 2,920,078.68 : x - Step 2: Convert to fraction form
3,781,452.12/5,220,330.30 = 2,920,078.68/x - Step 3: Cross multiply
3,781,452.12x = 5,220,330.30 × 2,920,078.68 - Step 4: Simplify right side
3,781,452.12x = 15,243,775,211,588.00 - Step 5: Solve for x
x = 15,243,775,211,588.00/3,781,452.12 - Step 6: Final answer
x = 4,031,196.15
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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.