Finding the Fourth Proportional to 612,397,319.70, 918,595,979.55 and 612,397,319.70
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Solution
The fourth proportional to 612,397,319.70, 918,595,979.55 and 612,397,319.70 is: 918,595,979.55
Step by Step Solution
- Step 1: Write the proportion equation
612,397,319.70 : 918,595,979.55 = 612,397,319.70 : x - Step 2: Convert to fraction form
612,397,319.70/918,595,979.55 = 612,397,319.70/x - Step 3: Cross multiply
612,397,319.70x = 918,595,979.55 × 612,397,319.70 - Step 4: Simplify right side
612,397,319.70x = 562,545,715,763,616,000 - Step 5: Solve for x
x = 562,545,715,763,616,000/612,397,319.70 - Step 6: Final answer
x = 918,595,979.55
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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.