Finding the Fourth Proportional to 808,202,221.20, 1,212,303,331.80 and 614,491,976.70
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Solution
The fourth proportional to 808,202,221.20, 1,212,303,331.80 and 614,491,976.70 is: 921,737,965.05
Step by Step Solution
- Step 1: Write the proportion equation
808,202,221.20 : 1,212,303,331.80 = 614,491,976.70 : x - Step 2: Convert to fraction form
808,202,221.20/1,212,303,331.80 = 614,491,976.70/x - Step 3: Cross multiply
808,202,221.20x = 1,212,303,331.80 × 614,491,976.70 - Step 4: Simplify right side
808,202,221.20x = 744,950,670,717,778,048 - Step 5: Solve for x
x = 744,950,670,717,778,048/808,202,221.20 - Step 6: Final answer
x = 921,737,965.05
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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.