Finding the Fourth Proportional to 664,276,441.80, 996,414,662.70 and 434,952,870.60
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Solution
The fourth proportional to 664,276,441.80, 996,414,662.70 and 434,952,870.60 is: 652,429,305.90
Step by Step Solution
- Step 1: Write the proportion equation
664,276,441.80 : 996,414,662.70 = 434,952,870.60 : x - Step 2: Convert to fraction form
664,276,441.80/996,414,662.70 = 434,952,870.60/x - Step 3: Cross multiply
664,276,441.80x = 996,414,662.70 × 434,952,870.60 - Step 4: Simplify right side
664,276,441.80x = 433,393,417,849,295,808 - Step 5: Solve for x
x = 433,393,417,849,295,808/664,276,441.80 - Step 6: Final answer
x = 652,429,305.90
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Double scale
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Similar ratio
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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.