Finding the Fourth Proportional to 1,323,378,220.80, 1,985,067,331.20 and 403,253,083.20
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Solution
The fourth proportional to 1,323,378,220.80, 1,985,067,331.20 and 403,253,083.20 is: 604,879,624.80
Step by Step Solution
- Step 1: Write the proportion equation
1,323,378,220.80 : 1,985,067,331.20 = 403,253,083.20 : x - Step 2: Convert to fraction form
1,323,378,220.80/1,985,067,331.20 = 403,253,083.20/x - Step 3: Cross multiply
1,323,378,220.80x = 1,985,067,331.20 × 403,253,083.20 - Step 4: Simplify right side
1,323,378,220.80x = 800,484,521,665,995,520 - Step 5: Solve for x
x = 800,484,521,665,995,520/1,323,378,220.80 - Step 6: Final answer
x = 604,879,624.80
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Double scale
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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.