Finding the Fourth Proportional to 918,572,486.80, 1,377,858,730.20 and 336,325,727.20
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Solution
The fourth proportional to 918,572,486.80, 1,377,858,730.20 and 336,325,727.20 is: 504,488,590.80
Step by Step Solution
- Step 1: Write the proportion equation
918,572,486.80 : 1,377,858,730.20 = 336,325,727.20 : x - Step 2: Convert to fraction form
918,572,486.80/1,377,858,730.20 = 336,325,727.20/x - Step 3: Cross multiply
918,572,486.80x = 1,377,858,730.20 × 336,325,727.20 - Step 4: Simplify right side
918,572,486.80x = 463,409,339,413,383,616 - Step 5: Solve for x
x = 463,409,339,413,383,616/918,572,486.80 - Step 6: Final answer
x = 504,488,590.80
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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.