Finding the Fourth Proportional to 798,354,218.80, 1,197,531,328.20 and 738,634,538.80
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Solution
The fourth proportional to 798,354,218.80, 1,197,531,328.20 and 738,634,538.80 is: 1,107,951,808.20
Step by Step Solution
- Step 1: Write the proportion equation
798,354,218.80 : 1,197,531,328.20 = 738,634,538.80 : x - Step 2: Convert to fraction form
798,354,218.80/1,197,531,328.20 = 738,634,538.80/x - Step 3: Cross multiply
798,354,218.80x = 1,197,531,328.20 × 738,634,538.80 - Step 4: Simplify right side
798,354,218.80x = 884,538,000,303,558,400 - Step 5: Solve for x
x = 884,538,000,303,558,400/798,354,218.80 - Step 6: Final answer
x = 1,107,951,808.20
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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.