Finding the Fourth Proportional to 831,614,615.80, 1,247,421,923.70 and 793,350,863.80
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Solution
The fourth proportional to 831,614,615.80, 1,247,421,923.70 and 793,350,863.80 is: 1,190,026,295.70
Step by Step Solution
- Step 1: Write the proportion equation
831,614,615.80 : 1,247,421,923.70 = 793,350,863.80 : x - Step 2: Convert to fraction form
831,614,615.80/1,247,421,923.70 = 793,350,863.80/x - Step 3: Cross multiply
831,614,615.80x = 1,247,421,923.70 × 793,350,863.80 - Step 4: Simplify right side
831,614,615.80x = 989,643,260,690,452,608 - Step 5: Solve for x
x = 989,643,260,690,452,608/831,614,615.80 - Step 6: Final answer
x = 1,190,026,295.70
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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.