Finding the Fourth Proportional to 490,040,416.60, 735,060,624.90 and 217,438,739.80
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Solution
The fourth proportional to 490,040,416.60, 735,060,624.90 and 217,438,739.80 is: 326,158,109.70
Step by Step Solution
- Step 1: Write the proportion equation
490,040,416.60 : 735,060,624.90 = 217,438,739.80 : x - Step 2: Convert to fraction form
490,040,416.60/735,060,624.90 = 217,438,739.80/x - Step 3: Cross multiply
490,040,416.60x = 735,060,624.90 × 217,438,739.80 - Step 4: Simplify right side
490,040,416.60x = 159,830,655,954,856,512 - Step 5: Solve for x
x = 159,830,655,954,856,512/490,040,416.60 - Step 6: Final answer
x = 326,158,109.70
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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.