Finding the Fourth Proportional to 391,873,770.18, 588,173,861.30 and 197,921,390.76
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Solution
The fourth proportional to 391,873,770.18, 588,173,861.30 and 197,921,390.76 is: 297,065,528.48
Step by Step Solution
- Step 1: Write the proportion equation
391,873,770.18 : 588,173,861.30 = 197,921,390.76 : x - Step 2: Convert to fraction form
391,873,770.18/588,173,861.30 = 197,921,390.76/x - Step 3: Cross multiply
391,873,770.18x = 588,173,861.30 × 197,921,390.76 - Step 4: Simplify right side
391,873,770.18x = 116,412,188,636,185,728 - Step 5: Solve for x
x = 116,412,188,636,185,728/391,873,770.18 - Step 6: Final answer
x = 297,065,528.48
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.