Finding the Fourth Proportional to 1,259,986,321.38, 1,738,521,534.99 and 724,034,466.21
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Solution
The fourth proportional to 1,259,986,321.38, 1,738,521,534.99 and 724,034,466.21 is: 999,018,394.27
Step by Step Solution
- Step 1: Write the proportion equation
1,259,986,321.38 : 1,738,521,534.99 = 724,034,466.21 : x - Step 2: Convert to fraction form
1,259,986,321.38/1,738,521,534.99 = 724,034,466.21/x - Step 3: Cross multiply
1,259,986,321.38x = 1,738,521,534.99 × 724,034,466.21 - Step 4: Simplify right side
1,259,986,321.38x = 1,258,749,511,581,074,688 - Step 5: Solve for x
x = 1,258,749,511,581,074,688/1,259,986,321.38 - Step 6: Final answer
x = 999,018,394.27
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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.