Finding the Fourth Proportional to 488,335,964.20, 732,503,946.30 and 422,578,997.80
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Solution
The fourth proportional to 488,335,964.20, 732,503,946.30 and 422,578,997.80 is: 633,868,496.70
Step by Step Solution
- Step 1: Write the proportion equation
488,335,964.20 : 732,503,946.30 = 422,578,997.80 : x - Step 2: Convert to fraction form
488,335,964.20/732,503,946.30 = 422,578,997.80/x - Step 3: Cross multiply
488,335,964.20x = 732,503,946.30 × 422,578,997.80 - Step 4: Simplify right side
488,335,964.20x = 309,540,783,511,998,976 - Step 5: Solve for x
x = 309,540,783,511,998,976/488,335,964.20 - Step 6: Final answer
x = 633,868,496.70
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1.5x scale
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.