Finding the Fourth Proportional to 8,920,137.12, 12,309,789.24 and 4,845,756.12
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Solution
The fourth proportional to 8,920,137.12, 12,309,789.24 and 4,845,756.12 is: 6,687,143.45
Step by Step Solution
- Step 1: Write the proportion equation
8,920,137.12 : 12,309,789.24 = 4,845,756.12 : x - Step 2: Convert to fraction form
8,920,137.12/12,309,789.24 = 4,845,756.12/x - Step 3: Cross multiply
8,920,137.12x = 12,309,789.24 × 4,845,756.12 - Step 4: Simplify right side
8,920,137.12x = 59,650,236,545,640.15 - Step 5: Solve for x
x = 59,650,236,545,640.15/8,920,137.12 - Step 6: Final answer
x = 6,687,143.45
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1.5x scale
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.