Finding the Fourth Proportional to 811,971,704.52, 1,120,531,701.78 and 440,698,186.44
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Solution
The fourth proportional to 811,971,704.52, 1,120,531,701.78 and 440,698,186.44 is: 608,169,331.61
Step by Step Solution
- Step 1: Write the proportion equation
811,971,704.52 : 1,120,531,701.78 = 440,698,186.44 : x - Step 2: Convert to fraction form
811,971,704.52/1,120,531,701.78 = 440,698,186.44/x - Step 3: Cross multiply
811,971,704.52x = 1,120,531,701.78 × 440,698,186.44 - Step 4: Simplify right side
811,971,704.52x = 493,816,288,822,972,928 - Step 5: Solve for x
x = 493,816,288,822,972,928/811,971,704.52 - Step 6: Final answer
x = 608,169,331.61
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Double scale
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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.