Finding the Fourth Proportional to 1,265,504,117.80, 1,898,256,176.70 and 345,473,458.60
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Solution
The fourth proportional to 1,265,504,117.80, 1,898,256,176.70 and 345,473,458.60 is: 518,210,187.90
Step by Step Solution
- Step 1: Write the proportion equation
1,265,504,117.80 : 1,898,256,176.70 = 345,473,458.60 : x - Step 2: Convert to fraction form
1,265,504,117.80/1,898,256,176.70 = 345,473,458.60/x - Step 3: Cross multiply
1,265,504,117.80x = 1,898,256,176.70 × 345,473,458.60 - Step 4: Simplify right side
1,265,504,117.80x = 655,797,126,673,361,792 - Step 5: Solve for x
x = 655,797,126,673,361,792/1,265,504,117.80 - Step 6: Final answer
x = 518,210,187.90
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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.