Finding the Fourth Proportional to 789,143,852.70, 1,183,715,779.05 and 757,399,110.30
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Solution
The fourth proportional to 789,143,852.70, 1,183,715,779.05 and 757,399,110.30 is: 1,136,098,665.45
Step by Step Solution
- Step 1: Write the proportion equation
789,143,852.70 : 1,183,715,779.05 = 757,399,110.30 : x - Step 2: Convert to fraction form
789,143,852.70/1,183,715,779.05 = 757,399,110.30/x - Step 3: Cross multiply
789,143,852.70x = 1,183,715,779.05 × 757,399,110.30 - Step 4: Simplify right side
789,143,852.70x = 896,545,277,900,541,312 - Step 5: Solve for x
x = 896,545,277,900,541,312/789,143,852.70 - Step 6: Final answer
x = 1,136,098,665.45
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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.