Finding the Fourth Proportional to 612,121,311.70, 918,181,967.55 and 612,121,311.70
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Solution
The fourth proportional to 612,121,311.70, 918,181,967.55 and 612,121,311.70 is: 918,181,967.55
Step by Step Solution
- Step 1: Write the proportion equation
612,121,311.70 : 918,181,967.55 = 612,121,311.70 : x - Step 2: Convert to fraction form
612,121,311.70/918,181,967.55 = 612,121,311.70/x - Step 3: Cross multiply
612,121,311.70x = 918,181,967.55 × 612,121,311.70 - Step 4: Simplify right side
612,121,311.70x = 562,038,750,355,992,832 - Step 5: Solve for x
x = 562,038,750,355,992,832/612,121,311.70 - Step 6: Final answer
x = 918,181,967.55
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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.