Finding the Fourth Proportional to 1,219,034,221.49, 1,682,238,611.67 and 717,275,504.63
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Solution
The fourth proportional to 1,219,034,221.49, 1,682,238,611.67 and 717,275,504.63 is: 989,823,360.02
Step by Step Solution
- Step 1: Write the proportion equation
1,219,034,221.49 : 1,682,238,611.67 = 717,275,504.63 : x - Step 2: Convert to fraction form
1,219,034,221.49/1,682,238,611.67 = 717,275,504.63/x - Step 3: Cross multiply
1,219,034,221.49x = 1,682,238,611.67 × 717,275,504.63 - Step 4: Simplify right side
1,219,034,221.49x = 1,206,628,549,093,669,888 - Step 5: Solve for x
x = 1,206,628,549,093,669,888/1,219,034,221.49 - Step 6: Final answer
x = 989,823,360.02
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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.