Finding the Fourth Proportional to 1,321,107,246.30, 1,981,660,869.45 and 885,750,779.10
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Solution
The fourth proportional to 1,321,107,246.30, 1,981,660,869.45 and 885,750,779.10 is: 1,328,626,168.65
Step by Step Solution
- Step 1: Write the proportion equation
1,321,107,246.30 : 1,981,660,869.45 = 885,750,779.10 : x - Step 2: Convert to fraction form
1,321,107,246.30/1,981,660,869.45 = 885,750,779.10/x - Step 3: Cross multiply
1,321,107,246.30x = 1,981,660,869.45 × 885,750,779.10 - Step 4: Simplify right side
1,321,107,246.30x = 1,755,257,659,027,321,088 - Step 5: Solve for x
x = 1,755,257,659,027,321,088/1,321,107,246.30 - Step 6: Final answer
x = 1,328,626,168.65
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Similar ratio
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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.