Finding the Fourth Proportional to 898,641,326.40, 1,347,961,989.60 and 735,382,651.20
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Solution
The fourth proportional to 898,641,326.40, 1,347,961,989.60 and 735,382,651.20 is: 1,103,073,976.80
Step by Step Solution
- Step 1: Write the proportion equation
898,641,326.40 : 1,347,961,989.60 = 735,382,651.20 : x - Step 2: Convert to fraction form
898,641,326.40/1,347,961,989.60 = 735,382,651.20/x - Step 3: Cross multiply
898,641,326.40x = 1,347,961,989.60 × 735,382,651.20 - Step 4: Simplify right side
898,641,326.40x = 991,267,861,628,874,880 - Step 5: Solve for x
x = 991,267,861,628,874,880/898,641,326.40 - Step 6: Final answer
x = 1,103,073,976.80
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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.