Finding the Fourth Proportional to 646,729,540.20, 970,236,027.90 and 319,361,884.20
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Solution
The fourth proportional to 646,729,540.20, 970,236,027.90 and 319,361,884.20 is: 479,112,807.95
Step by Step Solution
- Step 1: Write the proportion equation
646,729,540.20 : 970,236,027.90 = 319,361,884.20 : x - Step 2: Convert to fraction form
646,729,540.20/970,236,027.90 = 319,361,884.20/x - Step 3: Cross multiply
646,729,540.20x = 970,236,027.90 × 319,361,884.20 - Step 4: Simplify right side
646,729,540.20x = 309,856,405,988,867,776 - Step 5: Solve for x
x = 309,856,405,988,867,776/646,729,540.20 - Step 6: Final answer
x = 479,112,807.95
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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.