Finding the Fourth Proportional to 769,836,272.80, 1,152,486,927.60 and 724,990,525.60
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Solution
The fourth proportional to 769,836,272.80, 1,152,486,927.60 and 724,990,525.60 is: 1,085,350,395.80
Step by Step Solution
- Step 1: Write the proportion equation
769,836,272.80 : 1,152,486,927.60 = 724,990,525.60 : x - Step 2: Convert to fraction form
769,836,272.80/1,152,486,927.60 = 724,990,525.60/x - Step 3: Cross multiply
769,836,272.80x = 1,152,486,927.60 × 724,990,525.60 - Step 4: Simplify right side
769,836,272.80x = 835,542,103,387,853,056 - Step 5: Solve for x
x = 835,542,103,387,853,056/769,836,272.80 - Step 6: Final answer
x = 1,085,350,395.80
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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.