Finding the Fourth Proportional to 331,728,793.60, 497,817,139.20 and 216,432,486.40
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Solution
The fourth proportional to 331,728,793.60, 497,817,139.20 and 216,432,486.40 is: 324,794,842.32
Step by Step Solution
- Step 1: Write the proportion equation
331,728,793.60 : 497,817,139.20 = 216,432,486.40 : x - Step 2: Convert to fraction form
331,728,793.60/497,817,139.20 = 216,432,486.40/x - Step 3: Cross multiply
331,728,793.60x = 497,817,139.20 × 216,432,486.40 - Step 4: Simplify right side
331,728,793.60x = 107,743,801,209,590,912 - Step 5: Solve for x
x = 107,743,801,209,590,912/331,728,793.60 - Step 6: Final answer
x = 324,794,842.32
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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.