Finding the Fourth Proportional to 873,504,915.40, 1,310,257,373.10 and 806,992,121.80
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Solution
The fourth proportional to 873,504,915.40, 1,310,257,373.10 and 806,992,121.80 is: 1,210,488,182.70
Step by Step Solution
- Step 1: Write the proportion equation
873,504,915.40 : 1,310,257,373.10 = 806,992,121.80 : x - Step 2: Convert to fraction form
873,504,915.40/1,310,257,373.10 = 806,992,121.80/x - Step 3: Cross multiply
873,504,915.40x = 1,310,257,373.10 × 806,992,121.80 - Step 4: Simplify right side
873,504,915.40x = 1,057,367,377,622,063,104 - Step 5: Solve for x
x = 1,057,367,377,622,063,104/873,504,915.40 - Step 6: Final answer
x = 1,210,488,182.70
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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.