Finding the Fourth Proportional to 1,241,186,276.80, 1,861,779,415.20 and 423,325,259.20
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Solution
The fourth proportional to 1,241,186,276.80, 1,861,779,415.20 and 423,325,259.20 is: 634,987,888.80
Step by Step Solution
- Step 1: Write the proportion equation
1,241,186,276.80 : 1,861,779,415.20 = 423,325,259.20 : x - Step 2: Convert to fraction form
1,241,186,276.80/1,861,779,415.20 = 423,325,259.20/x - Step 3: Cross multiply
1,241,186,276.80x = 1,861,779,415.20 × 423,325,259.20 - Step 4: Simplify right side
1,241,186,276.80x = 788,138,253,512,764,416 - Step 5: Solve for x
x = 788,138,253,512,764,416/1,241,186,276.80 - Step 6: Final answer
x = 634,987,888.80
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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.