Finding the Fourth Proportional to 918,572,553.30, 1,377,858,829.95 and 336,325,793.70
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Solution
The fourth proportional to 918,572,553.30, 1,377,858,829.95 and 336,325,793.70 is: 504,488,690.55
Step by Step Solution
- Step 1: Write the proportion equation
918,572,553.30 : 1,377,858,829.95 = 336,325,793.70 : x - Step 2: Convert to fraction form
918,572,553.30/1,377,858,829.95 = 336,325,793.70/x - Step 3: Cross multiply
918,572,553.30x = 1,377,858,829.95 × 336,325,793.70 - Step 4: Simplify right side
918,572,553.30x = 463,409,464,589,487,104 - Step 5: Solve for x
x = 463,409,464,589,487,104/918,572,553.30 - Step 6: Final answer
x = 504,488,690.55
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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.