Finding the Fourth Proportional to 5,390,858,937.05, 7,439,770,297.87 and 2,979,489,555.08
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Solution
The fourth proportional to 5,390,858,937.05, 7,439,770,297.87 and 2,979,489,555.08 is: 4,111,908,353.29
Step by Step Solution
- Step 1: Write the proportion equation
5,390,858,937.05 : 7,439,770,297.87 = 2,979,489,555.08 : x - Step 2: Convert to fraction form
5,390,858,937.05/7,439,770,297.87 = 2,979,489,555.08/x - Step 3: Cross multiply
5,390,858,937.05x = 7,439,770,297.87 × 2,979,489,555.08 - Step 4: Simplify right side
5,390,858,937.05x = 22,166,717,894,645,985,280 - Step 5: Solve for x
x = 22,166,717,894,645,985,280/5,390,858,937.05 - Step 6: Final answer
x = 4,111,908,353.29
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.