Finding the Fourth Proportional to 3,128,536.20, 4,689,305.10 and 1,781,344.20
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Solution
The fourth proportional to 3,128,536.20, 4,689,305.10 and 1,781,344.20 is: 2,670,023.91
Step by Step Solution
- Step 1: Write the proportion equation
3,128,536.20 : 4,689,305.10 = 1,781,344.20 : x - Step 2: Convert to fraction form
3,128,536.20/4,689,305.10 = 1,781,344.20/x - Step 3: Cross multiply
3,128,536.20x = 4,689,305.10 × 1,781,344.20 - Step 4: Simplify right side
3,128,536.20x = 8,353,266,441,915.42 - Step 5: Solve for x
x = 8,353,266,441,915.42/3,128,536.20 - Step 6: Final answer
x = 2,670,023.91
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1.5x scale
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.