Finding the Fourth Proportional to 2,378,406,141.20, 3,567,609,211.80 and 655,120,125.20
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Solution
The fourth proportional to 2,378,406,141.20, 3,567,609,211.80 and 655,120,125.20 is: 982,680,187.80
Step by Step Solution
- Step 1: Write the proportion equation
2,378,406,141.20 : 3,567,609,211.80 = 655,120,125.20 : x - Step 2: Convert to fraction form
2,378,406,141.20/3,567,609,211.80 = 655,120,125.20/x - Step 3: Cross multiply
2,378,406,141.20x = 3,567,609,211.80 × 655,120,125.20 - Step 4: Simplify right side
2,378,406,141.20x = 2,337,212,593,499,089,408 - Step 5: Solve for x
x = 2,337,212,593,499,089,408/2,378,406,141.20 - Step 6: Final answer
x = 982,680,187.80
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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.