Finding the Fourth Proportional to 426,055,233.60, 639,082,850.40 and 219,430,972.80
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Solution
The fourth proportional to 426,055,233.60, 639,082,850.40 and 219,430,972.80 is: 329,146,459.20
Step by Step Solution
- Step 1: Write the proportion equation
426,055,233.60 : 639,082,850.40 = 219,430,972.80 : x - Step 2: Convert to fraction form
426,055,233.60/639,082,850.40 = 219,430,972.80/x - Step 3: Cross multiply
426,055,233.60x = 639,082,850.40 × 219,430,972.80 - Step 4: Simplify right side
426,055,233.60x = 140,234,571,563,068,864 - Step 5: Solve for x
x = 140,234,571,563,068,864/426,055,233.60 - Step 6: Final answer
x = 329,146,459.20
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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.