Finding the Fourth Proportional to 1,276,324,555.95, 1,761,463,299.42 and 748,132,321.23
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Solution
The fourth proportional to 1,276,324,555.95, 1,761,463,299.42 and 748,132,321.23 is: 1,032,501,976.72
Step by Step Solution
- Step 1: Write the proportion equation
1,276,324,555.95 : 1,761,463,299.42 = 748,132,321.23 : x - Step 2: Convert to fraction form
1,276,324,555.95/1,761,463,299.42 = 748,132,321.23/x - Step 3: Cross multiply
1,276,324,555.95x = 1,761,463,299.42 × 748,132,321.23 - Step 4: Simplify right side
1,276,324,555.95x = 1,317,807,626,956,539,136 - Step 5: Solve for x
x = 1,317,807,626,956,539,136/1,276,324,555.95 - Step 6: Final answer
x = 1,032,501,976.72
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.