Finding the Fourth Proportional to 664,302,607.70, 996,453,911.55 and 492,115,723.70
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Solution
The fourth proportional to 664,302,607.70, 996,453,911.55 and 492,115,723.70 is: 738,173,585.55
Step by Step Solution
- Step 1: Write the proportion equation
664,302,607.70 : 996,453,911.55 = 492,115,723.70 : x - Step 2: Convert to fraction form
664,302,607.70/996,453,911.55 = 492,115,723.70/x - Step 3: Cross multiply
664,302,607.70x = 996,453,911.55 × 492,115,723.70 - Step 4: Simplify right side
664,302,607.70x = 490,370,637,816,124,032 - Step 5: Solve for x
x = 490,370,637,816,124,032/664,302,607.70 - Step 6: Final answer
x = 738,173,585.55
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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.