Finding the Fourth Proportional to 873,767,371.20, 1,310,651,056.80 and 798,940,478.40
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Solution
The fourth proportional to 873,767,371.20, 1,310,651,056.80 and 798,940,478.40 is: 1,198,410,717.60
Step by Step Solution
- Step 1: Write the proportion equation
873,767,371.20 : 1,310,651,056.80 = 798,940,478.40 : x - Step 2: Convert to fraction form
873,767,371.20/1,310,651,056.80 = 798,940,478.40/x - Step 3: Cross multiply
873,767,371.20x = 1,310,651,056.80 × 798,940,478.40 - Step 4: Simplify right side
873,767,371.20x = 1,047,132,182,335,257,472 - Step 5: Solve for x
x = 1,047,132,182,335,257,472/873,767,371.20 - Step 6: Final answer
x = 1,198,410,717.60
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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.