Finding the Fourth Proportional to 800,809,664.70, 1,201,214,497.05 and 628,816,986.30
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Solution
The fourth proportional to 800,809,664.70, 1,201,214,497.05 and 628,816,986.30 is: 943,225,479.45
Step by Step Solution
- Step 1: Write the proportion equation
800,809,664.70 : 1,201,214,497.05 = 628,816,986.30 : x - Step 2: Convert to fraction form
800,809,664.70/1,201,214,497.05 = 628,816,986.30/x - Step 3: Cross multiply
800,809,664.70x = 1,201,214,497.05 × 628,816,986.30 - Step 4: Simplify right side
800,809,664.70x = 755,344,079,934,851,200 - Step 5: Solve for x
x = 755,344,079,934,851,200/800,809,664.70 - Step 6: Final answer
x = 943,225,479.45
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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.