Finding the Fourth Proportional to 18,406,416,538.20, 27,609,624,807.30 and 12,773,992,243.80
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Solution
The fourth proportional to 18,406,416,538.20, 27,609,624,807.30 and 12,773,992,243.80 is: 19,160,988,365.70
Step by Step Solution
- Step 1: Write the proportion equation
18,406,416,538.20 : 27,609,624,807.30 = 12,773,992,243.80 : x - Step 2: Convert to fraction form
18,406,416,538.20/27,609,624,807.30 = 12,773,992,243.80/x - Step 3: Cross multiply
18,406,416,538.20x = 27,609,624,807.30 × 12,773,992,243.80 - Step 4: Simplify right side
18,406,416,538.20x = 352,685,133,142,678,241,280 - Step 5: Solve for x
x = 352,685,133,142,678,241,280/18,406,416,538.20 - Step 6: Final answer
x = 19,160,988,365.70
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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.