Finding the Fourth Proportional to 804,817,961.40, 1,207,226,942.10 and 659,415,703.80
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Solution
The fourth proportional to 804,817,961.40, 1,207,226,942.10 and 659,415,703.80 is: 989,123,555.70
Step by Step Solution
- Step 1: Write the proportion equation
804,817,961.40 : 1,207,226,942.10 = 659,415,703.80 : x - Step 2: Convert to fraction form
804,817,961.40/1,207,226,942.10 = 659,415,703.80/x - Step 3: Cross multiply
804,817,961.40x = 1,207,226,942.10 × 659,415,703.80 - Step 4: Simplify right side
804,817,961.40x = 796,064,403,671,193,216 - Step 5: Solve for x
x = 796,064,403,671,193,216/804,817,961.40 - Step 6: Final answer
x = 989,123,555.70
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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.