Finding the Fourth Proportional to 728,275,806.20, 1,092,413,709.30 and 644,095,551.80
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Solution
The fourth proportional to 728,275,806.20, 1,092,413,709.30 and 644,095,551.80 is: 966,143,327.70
Step by Step Solution
- Step 1: Write the proportion equation
728,275,806.20 : 1,092,413,709.30 = 644,095,551.80 : x - Step 2: Convert to fraction form
728,275,806.20/1,092,413,709.30 = 644,095,551.80/x - Step 3: Cross multiply
728,275,806.20x = 1,092,413,709.30 × 644,095,551.80 - Step 4: Simplify right side
728,275,806.20x = 703,618,810,885,468,160 - Step 5: Solve for x
x = 703,618,810,885,468,160/728,275,806.20 - Step 6: Final answer
x = 966,143,327.70
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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.